Thank you, thank you Mr. Anderson, for sharing this video. For anyone interested, this is the ONLY design out of dozens of coils my dad and I made, that actually works. The combination of the ZTX451 transistor and the 180 ohm resistor actually did the trick. If you're building a Clayton Boyer Toucan Clock, do yourself a HUGE favor, and follow Dave's advice here. We've wasted hundreds of dollars on copper wire and power supplies of all types and models, before discovering this video.
@kurtbilinski1723
3 ай бұрын
The coil circuit has been around for decades and is used in nearly every cheap battery-powered pendulum clock. I suggest taking apart a clock and using the coil and circuit as-is; it's virtually the same and you don't have to fuss with winding your own coil. Bonus: the circuit and coil is much smaller, so the base assembly can be made thinner. Full disclosure: I have not started construction on my Toucan yet, but did build a similar clock using the same mechanism, from a design on the holzmechanik clock site. That designer uses a circuit that originally runs on a 1.5V AA battery, but in his design, runs it on 6V due to the increased friction without any issues. Oh, and regarding issues with transistors, nearly any NPN type will work, BUT, be aware that the pinouts may differ. I swapped in a 2N3904 for a failed transistor and the pinouts were different! Check first.
@daveanderson3768
7 жыл бұрын
I am glad you have been helped by this information, it is not the best quality video but hopefully gets the message out. Clayton's designs are brilliant but I found making the coil & cutting the gears to be a bit of a challenge.The same coil is used in the Art & Crafts clock which is also a great build & I have a wall mounted version based on that design that I have called Charlie after my grandson.\it differs slightly as the coil is above the pendulum instead of below it so there is a shorter & slower arc. I found in this case that the resistor did not make the difference that it does with the Toucan & it can be omitted as the ZTX651 is robust enough without it.
@rustywaters5246
6 жыл бұрын
Hello Dave, this video really help me more forward into building the impulse coil. I made a drawing to help clarify the circuit, please verify all is correct... I will attempt to upload the pdf file.... :)
@Hoss_1966
4 жыл бұрын
could you use a ztx653, I have a couple of those so I would not need to order, thanks
@oscarmesa7786
4 жыл бұрын
Thank you Mr Anderson for your time, information and sharing....Please, I have a question: 61meters of wire for both coils or 61 and 61.
@user-ze4oy2mz6w
8 ай бұрын
aksuh Good evening sir. Is the second coil wrapped in the direction of the first coil or in reverse?
@user-ci3gu3wm5g
8 ай бұрын
Good evening, sir. Does the nail that you used in the file not have the magnet stick to it?
@daveanderson3768
8 ай бұрын
I don't quite understand your question. As the permanent magnet passes over the coils, the sensing coil is energized to send a signal which then causes a current to be sent to the other coil. This means that the nail becomes an electromagnet for a brief period at just the right moment to repel the permanent magnet as it passes & therefore push the pendulum, this is what keeps the clock going.
@oscarmesa7786
4 жыл бұрын
Thanks Mr Anderson once again....I received the neodymium today, so immediately I put together everything and the pendulum is working fine. Please, when you have a chance ,,,,I need to know the proper dimension(the length) for the pendulum rod. Thanks in advance....
@daveanderson3768
4 жыл бұрын
I am not sure why you are asking this question because the length of the rod is determined by the distance from the pivot to the coil that the magnet just passes over & if your pendulum is working then you already have that worked out so I guess you are referring to the position of the weight . While the rod is a set length the weight needs to be adjustable so it can move up or down the rod to fine tune the timing as per any pendulum clock but a starting point might be to have the centre of the weight about 270mm below the pivot. Run the clock for a few hours & raise the weight if the clock is slow or lower it if running fast. I used a stainless steel bolt which was drilled out to allow it to slide up & down the rod & locked in roughly the right length by a grubscrew ,the brass weight is threaded to suit the bolt & screws up or down to fine tune before a thin nut locks it in place.
@oscarmesa7786
4 жыл бұрын
@@daveanderson3768 Thanks for your fast reply, I understand your point....I m talking about the distance from the pivot to the coil. Today I m gonna set the weight. Thanks a million for your explanation.....
@daveanderson3768
6 жыл бұрын
Yes I did pass the details on to Clayton & maybe he will eventually amend the plans especially if he gets feedback from people who confirm the results. This is the same system that drives Clayton's Arts and Crafts wood geared clock which is another fantastic piece that is well recommended & a natural for anyone who has built the Toucan. There is nothing wrong with the design as he has made it but I decided to make some minor changes so if you are interested please take a look at my video on it : kzitem.info/news/bejne/sLCF24Kmcnh4dKizost of Clayton's earlier clocks were weight driven & wall hung so the Toucan & the Arts and Crafts were a change from that. I ran out of places to put any more shelf clocks but had some walls so rather than simply build an existing design I decided to modify the A&C to make it wall mounted. One of the things I like about the electromagnetic drive is not having to wind it up or reset it as well as it being reasonably accurate. So using the same drive system (with a few tweaks) & loosely based on the A&C I came up with "Wood Geared Clock Charlie" as shown on the short video: kzitem.info?search_query=wood+geared+clock+charlie : Because I was able to hide some things the appearance is perpetual motion as there does not seem to be enough stuff to make it work or an obvious driving force.Good Luck!!!!!!!!!
@draganmatic8074
6 жыл бұрын
There is information about the length and diameter of the wire; please tell me what is the NUMBER OF SPECIES for the primary and secondary spool and in which diameter of the core they are wound up, thank you
@daveanderson3768
6 жыл бұрын
I think you are referring to the number of turns there are on each coil but actually it does not matter, just measure 200 feet ( 61 meters) of 0.25mm coated copper wire & simply wind it all on. The diameter is also approximate & will depend on the core size & how well the wire is wound on but again is not important. The vital aspects here are insulation & connection. The core must be iron (steel) which is insulated (shrink wrap) before winding on the first coil. The copper wire used is coated with a varnish or similar coating so that each turn is insulated from the others giving us a 200 ft continuous wire or else it would in effect just be a big blob of copper. The ends of the wire must be cleaned well to allow soldering but it is a delicate job to scrape off this coating where required without breaking the wire & that is why I recommend doing this as you go in case there is a problem. It is also a good idea to check the continuity with a meter as each connection is soldered to ensure there is not a dry joint (bad connection) or communication with parts that should be insulated.So starting with an insulated core solder the start of the first coil & check, then wind on the 200 ft of wire before soldering & checking the tail end. Wrap with tape to insulate & repeat the process for the second coil which is wound in the same direction over the first. A final check should show that the coils have the correct resistance, are connected to the board properly & are insulated from the core & each other. When connected to a 12v battery each coil should act as a quite strong electromagnet.
@woltervandenberg
6 жыл бұрын
Thank you very much sir. I build the Toucan a couple of years ago but I couldnt get the coil to work properly even though I tried several different transistors. So the clock has been gathering dust the last two years just looking pretty but not working. Until I came across your video (and read Carey Hofmanns comment). I thought lets just give this a try and I got some ztx451 transistors and swopped them for the last one I tried. I removed the diode and put a 180 ohm resistor in front of the base and the first time I swang the pendulum it worked like a charm. After a little bit of finetuning I now have a working clock. It has been running for over a week now without a hickup. Wish I had known this earlier, would have saved me alot of frustration. Did you share this information with Clayton Boyer? It would be nice if he could include this in the plans for the Toucan.
@daveanderson3768
6 жыл бұрын
Yes I did pass the details on to Clayton & maybe he will eventually amend the plans especially if he gets feedback from people who confirm the results. This is the same system that drives Clayton's Arts and Crafts wood geared clock which is another fantastic piece that is well recommended & a natural for anyone who has built the Toucan. There is nothing wrong with the design as he has made it but I decided to make some minor changes so if you are interested please take a look at my video on it : kzitem.info/news/bejne/sLCF24Kmcnh4dKizost of Clayton's earlier clocks were weight driven & wall hung so the Toucan & the Arts and Crafts were a change from that. I ran out of places to put any more shelf clocks but had some walls so rather than simply build an existing design I decided to modify the A&C to make it wall mounted. One of the things I like about the electromagnetic drive is not having to wind it up or reset it as well as it being reasonably accurate. So using the same drive system (with a few tweaks) & loosely based on the A&C I came up with "Wood Geared Clock Charlie" as shown on the short video: kzitem.info?search_query=wood+geared+clock+charlie :Because I was able to hide some things the appearance is perpetual motion as there does not seem to be enough stuff to make it work or an obvious driving force.Good Luck!!!!!!!!!
@woltervandenberg
6 жыл бұрын
One thing though, I couldnt get the pendulum to swing on 9v, but it works flawless on 12v without getting hot. I think its because my coils are both precisely 22 ohms and the nail I used is alot smaller (including the head). I have no problems running it at 12v, but could I possibly get it to work on 9v by using a smaller resistor between the coil and the base (I now use a 180 ohm resistor).
@daveanderson3768
6 жыл бұрын
I don't think there would ever be a problem with the coil getting too hot as in normal use it is only powered up for very short bursts. The point I made originally was that when the old style transistor failed it always failed closed so the coil was then powered up continuously & if the power supply was large enough perhaps that might cause the coil to get quite hot. My findings were that the 180 ohm resistor gave the best results for this clock so I think changing that will lead to less power in the pendulum so even more power would be needed. This is also based on the core being 5mm with a 10mm head so perhaps a smaller core will cause less magnetic effect. One thing that I haven't really mentioned is that I replaced some of the original bushes(tubes) with ball bearings as any friction has a huge effect. Bearings tend to come full of grease so need to be degreased & oiled to free them up. The Art and Crafts clock is virtually identical in terms of drive & although I started it off on a 9 volt supply I found things freed up a bit so this was too much & I reduced to 6V. & it has gone non stop now for a couple of years. As mentioned not all power supplies are the same & we need some current as well as voltage so I found the best to be a switching supply giving up to 1 amp as they give a constant voltage across a range. So there are several possible reasons why you are needing extra power but I would suspect that the core you have used is a bit too small & the ideal is probably to have the head the same diameter as the permanent magnet (I assume we are using similar) to give the best drive..
@woltervandenberg
6 жыл бұрын
You could be right about the magnet (I'm using a 12x3 magnet) and the head. Its funny because I was actually thinking about putting a ballbearing in the top of the frame because I get some play in the brass tube because of the weight of the pendulum. But as I understand I would have to oil and degrease this ballbearing if I choose to do so (how often?) The clock is running fine on 12v with the brass tubes, but I notice there is a bit of play in the pendulumshaft, probably because of the push of the magnet. (You can hear it tick in a quiet environment). Running it on 12v is not going to be a problem however. I had the coil powered for over a day with a stationary pendulum just to test it and it didn't even get slightly hot.
@daveanderson3768
6 жыл бұрын
If I had to guess I would say it would probably be several or many years between having to reoil a bearing in that position but if it is working OK & you are happy with it then you might as well leave it as is & make changes if you do it again (I recommend the A&C) . As for the coil heating up it will not happen anyhow when the pendulum is stationary because the transistor is only triggered when the magnet is moving & passes over the sensing coil which means it only happens in short bursts, it is not a proximity switch.. As previously mentioned the coil is only continuously powered up in the event that the transistor fails in the closed position & this is what tended to happen with the originally specified transistor but even then I doubt the coil would warm up enough to be a hazard with the power supplies we are using..
@radadvital3082
9 ай бұрын
Hello tell me please Can transistor ztx451 be replaced with transistor bc639?
@daveanderson3768
9 ай бұрын
Not sure, sorry.
@soneshgill5016
4 жыл бұрын
Hi, thank you for the instructions. I know its been a while since you posted this. But im building this electromagnet for my clock, I was wondering, how did you mount the positive and negative wires... did you use a mount? Or solder the wires directly onto the board at track 3 and 6.
@daveanderson3768
4 жыл бұрын
Solder wires to the board. Using vero pins to mount transistor etc makes it easier to change the component should that ever be needed.
@soneshgill5016
4 жыл бұрын
@@daveanderson3768 thank you so much!
@soneshgill5016
4 жыл бұрын
@@daveanderson3768 hi again, so i have completed the electromagnet. Im about to start on the gears but when I tested it out it wasn't that strong of an electromagnet. Is that right? When you hooked up the individual coils they were strong enough to hold a a pair of pliers... my completed assembly with both coils, the resistor and the transistor won't pick up a pair of pliers. The coils at every stage were tested and read 22 ohms.
@daveanderson3768
4 жыл бұрын
@@soneshgill5016 The test shown was of the coils when completed to prove that they work as electromagnets before connecting to the board & other components. Each coil on its own is simply connected directly to a 12v battery & should become a magnet. It shows that there are no breaks in the coils & the coils are insulated from each other and the core. Having done this it is not necessary or easy to test the coils other than running the clock. If you have a bench power supply with an analogue (not digital) amp meter it can be seen that there is only a very small and short burst of current as the magnet in the pendulum passes the coil and triggers the transistor. The point here is that the permanent magnet has to be moving past the trigger coil to produce the current to fire the transistor & this only happens for a split second on each swing. Once the coils are tested there is not much to go wrong & the most likely cause of not working would be in the soldering. If the clock runs for a while & stops it indicates there is friction somewhere in the system, which could be in the bearings or gears not meshing properly. After a period of running in my clocks worked OK around 6 volts. Cutting of the gears needs to be quite precise, I wonder how you are doing that. Good luck.
@soneshgill5016
4 жыл бұрын
@@daveanderson3768 ahh I understand! Thanks again.
@user-ci3gu3wm5g
8 ай бұрын
Is the nail used made of iron?
@daveanderson3768
8 ай бұрын
Just an ordinary iron / steel nail, rod etc.
@daveanderson3768
8 ай бұрын
Same
@atifali4703
3 жыл бұрын
Can u share circuit diagram please. I didn't understand on page which u have shown
@daveanderson3768
3 жыл бұрын
Hi, I am not sure I can explain it any better than what is shown at the end of the video but I will try to split it up a bit. When you are looking at the flat side of the ZXT451 transistor with the pins pointing down, you have Emitter on the left, Base in middle & Collector on right. I had 6 individual tracks. Items on a track are connected to all others on same track only. Track 1 not used. Track 2 Start of Inner Coil (SIC) + 1 end of resistor. Track 3 End of Inner Coil (EIC) + Emitter Track 4 Other end of resistor + Base of transistor. Track 5 End of Outer Coil (EOC) + Collector. Track 6 Start of Outer Coil (SOC) Power Supply Positive to Track 6 Power Supply Negative to Track 3. I hope this helps.
@user-ut3ld5hb4m
7 ай бұрын
Good evening sir, please tell me how long the toucan pendulum is
@daveanderson3768
7 ай бұрын
It is around 306 mm long from pivot point to end but is adjustable so the magnet is very close to the coil as it passes over.
@user-ci3gu3wm5g
7 ай бұрын
Thank you
@user-ut3ld5hb4m
7 ай бұрын
Thank you
@daveanderson3768
4 жыл бұрын
It requires 200 ft (61 meters) of wire for each coil so 61 + 61.
@oscarmesa7786
4 жыл бұрын
Thanks Mr Anderson for your reply....Please what kind of magnet may I use on the pendulum?
@daveanderson3768
4 жыл бұрын
Any strong magnet should work. I think I used a round neodymium about 12mm diameter, they are readily available on Ebay. It needs to swing just clear of the electromagnet / coil.
@oscarmesa7786
4 жыл бұрын
@@daveanderson3768 thanks a million for your recommendation, I really appreciated it...TNX
@user-ci3gu3wm5g
8 ай бұрын
What is the diameter of the nail?
@daveanderson3768
8 ай бұрын
From memory it was a 6 inch nail so something about 6mm diameter but the size is not critical.
@user-ci3gu3wm5g
8 ай бұрын
Thank you very much for the answer. As for a final question, are the wires in the first and second coils wrapped in the same direction or in reverse? Please forgive me for disturbing you.
@daveanderson3768
8 ай бұрын
Same direction.@@user-ci3gu3wm5g
@user-ci3gu3wm5g
8 ай бұрын
Thank you very much
@daveanderson3768
7 жыл бұрын
I have built another wooden clock. Wood Geared Clock Charlie.kzitem.info/news/bejne/kWt_rWRpo2KEp4o
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