I have an old Heathkit Sine-Square wave generator which seems to oscillate.
I know its supposed to do this but this oscillates on top of its regular wiggles, on the scope you see several sine curves originating from the same starting point.
First I thought there was a power supply hum on the signal, so I disconnected the heathkit power supply and connected it to the bench power supply, but the unwanted oscillation persists.
Does anybody have a decent circuit diagram?? I have one so washed out I can't read it.
Uwe
I know its supposed to do this but this oscillates on top of its regular wiggles, on the scope you see several sine curves originating from the same starting point.
First I thought there was a power supply hum on the signal, so I disconnected the heathkit power supply and connected it to the bench power supply, but the unwanted oscillation persists.
Does anybody have a decent circuit diagram?? I have one so washed out I can't read it.
Uwe