Hie. How can i build a function generator from op-amps
I've also been looking for weeks for a simple one with just opamps or transistors, but I couldn't find any that I liked; as this one for example http://www.circuitstoday.com/simple-function-generator-circuit:Hie. How can i build a function generator from op-amps
That is true for production builds, but for a hobby build, that comment makes no sense at all - especially since all he has all the parts - and, because all of these obsolete arts are commonly available as NOS.There is little point discussing a circuit for a new build that has obsolete parts (my cmos data book is from 1991 and does not show these parts). Find a design which uses currently available parts and let's start over. There are 100s on the internet! E
Yes, someone else already told me to put decoupling caps between the supplies of the ICs, and one cap on the multivibrator fixed the problem.Try adding supply decoupling caps (0.1uF ceramic) directly across the supply pins of each IC.
Adam555,
You might want to simplify your devices and make one frequency generator and a separate frequency counter (best done with a PIC).
I'm planning on getting a PIC programer pretty soon and start learning how to use it, but for now I prefer to stick to basics. The the purpose of this project is to learn as much as making a function generator.Here is one suitable for audio frequencies. It only needs one IC (a PIC micro) and has the benefit of being very easy to build, and makes very accurate frequencies which are all decimal Hz locked (ie 100.00 Hz, 200.00 Hz etc).
by Aaron Carman
by Jake Hertz
by Duane Benson
by Aaron Carman