You can also make a VCO with that, use 5 of the gates in a ring oscillator, and the sixth as a buffer, and feed Vcc in as a variable voltage, so you can adjust the output frequency. Not too stable, but, with a PLL, it works well to make a multi megahertz oscillator, though frequency depends on the actual logic family used, along with the manufacturer of the specific IC. Second package acting as buffer to get a logic level output might be needed, along with a pull up resistor, to get a reliable logic level at the lower end of the control voltage range as well.
@charlesmangum2100
Жыл бұрын
Ring oscillators are fun to play with.
@leosbagoftricks3732
2 жыл бұрын
My favorite is to build this with the CD4093 CMOS NAND- then the oscillator is gate-able and much fun can be had!
@TechProbe
2 жыл бұрын
Quick and nice demonstration of an Oscillator using the Hysteresis property shown in the previous video !
@williamsnyder193
2 жыл бұрын
Ha! Nice label on the scope. I’ve got the same “upgrade”
@migry
2 жыл бұрын
When I was a kid I used this type of oscillator for my VDU project because I couldn’t afford to buy a crystal.
@christopherventer6391
2 жыл бұрын
So you can actually take both outputs and mix them if you use a pair of buffer stages and adjust for the level discrepancy between the two, I imagine. Could be quite handy for a simple LFO generator.
@frankowalker4662
2 жыл бұрын
Cool. And useful.
@bobdoritique7347
2 жыл бұрын
Merci!
@dixsusu
2 жыл бұрын
My first clock circuitry , thats how hard was to find cristals for sale here in east -europe.
@teslakovalaborator
2 жыл бұрын
In the east, even schmitt trigger ICs were a problem :D Only I can recall being made were 74132. Oscillators were mostly built with 7400/7404 and those were pretty picky oscillators...
@AlPha-lv8ok
2 жыл бұрын
Nice
@t1d100
2 жыл бұрын
Fun!
@iblesbosuok
2 жыл бұрын
What about CMOS 40106 and 4584? Thanks
@IMSAIGuy
2 жыл бұрын
yes, those do the same thing
@gustavoeliasvillegassixto6023
8 ай бұрын
Hi, how can I use this same oscillator but using a 4MHz quartz crystal?
Interesting video, but some of those TTL circuits are getting hard to find these days. So, I have wonder if you couldn't much of same effect using op-amp or comparator.
@IMSAIGuy
2 жыл бұрын
yes of course. there are many circuits to choose from
@teslakovalaborator
2 жыл бұрын
74HC series is not that hard to find, but the 74 series has been limited just to some popular gates, counters, FFs, latches...
@dahlavibez5726
Жыл бұрын
Is the pin function similar to cd40106?
@IMSAIGuy
Жыл бұрын
Same
@hadibq
2 жыл бұрын
👍👍
@rz1359
2 жыл бұрын
Oscillating frequency: f=1/2.2RC
@Blue.star1
8 ай бұрын
Chatgpt gives different formulas and different results of frequency
Пікірлер: 28