Good idea.Hi everyone, Just a novice I bought this generator to use for learning purposes
How do you know it is not working?unfortuneately its not working.
OK, a good start.The power led comes on and all voltages stated on circuit diagram appear ok.
I will annotate the schematic and attach it to anothe post.I am struggling to follow the circuit if anyone can breakdown the circuit to make it easier to understand I would be grateful.
How did you determine that?Any suggestions as to what is possibly wrong would also be of help. I do not have any sine,square, triangle waves
Why, what made you suspect them rather than any other component?I replaced all 3904 and 3906 trs. still the same.
Hi KeepItSimpleStupid, dont have a signal injectorThe #1 thing to do is "inspection"
The #2 thing to do is to check the power supplies; both values and ripple
With this sort of system you can use signal tracing or signal injection usually in a halfing fashion. (binary search). Is it present half-way. No what half. trace half of the half etc.
So, I would use something easy like 1 Khz and check for sine, square and ttl. Verify it doesn't work in all ranges. That's part of the verification.
Then check for a signal at the output of the oscillator.
wkrubg said:i think this whole "Oscillator" Circuit is OK.
Because John McGivern said the Oscillator does not oscillating.Why are you guys concentration on DC voltages when a scope is available?
I meanth the current sources of the Oscillator that was named "oscillator" in a few posts before.i think this whole "Oscillator" Circuit is OK.
Question: Why are you guys concentration on DC voltages when a scope is available?
I think that's not OK.Pin9 = 1.83Vdc
Really to Pin 11 of IC9 not to Pin 13??? Because Pin11 of IC9 is an Output.NE527N pin9 linked via 100ohm resistor to DN74LS37 pin11.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?