Hi,guys
Can anyone help me with a Wien bridge oscillator that does not Osillate
I'm using a LM324 Op amp,and the supply volatge is a 9 V battery.
The inverted input of the Op Amp is conected to a divider network of a 68 ohm resistor and a 12 V 50mA filament lamp.
The non inverted input is connected to a feed back network consisting of the following:a 100nF capacitor(I've used polarised and Non Polarised capacitors)in parralel with a 10 k ohm resistor.This resistor and capacitor that's in parallel with each other is conected to a 10 k ohm resistor in series with a 100 nF capacitor which is conneted to the output of the Op Amp.The one end of the filament lamp is connected to the other end of the Parallel network consisted of a Capacitor and Resistor.The other end of the resistor witch forms the divider network with the filament lamp is connected to the output of the op amp.When power is supplied nothing happens.No osillation noting.I'll post the schematics when I'm at my PC I'm using my BB.
If anyone can help it would be appreciated.I don't know maybe the way I've setted up the circuit on the bread board is wrong.I really don't know.
Oh and the resistance of the lamp when it is off is 35.5 ohm witch is half of the resistor in the divider network for the inverted input of the op amp.
Can anyone help me with a Wien bridge oscillator that does not Osillate
I'm using a LM324 Op amp,and the supply volatge is a 9 V battery.
The inverted input of the Op Amp is conected to a divider network of a 68 ohm resistor and a 12 V 50mA filament lamp.
The non inverted input is connected to a feed back network consisting of the following:a 100nF capacitor(I've used polarised and Non Polarised capacitors)in parralel with a 10 k ohm resistor.This resistor and capacitor that's in parallel with each other is conected to a 10 k ohm resistor in series with a 100 nF capacitor which is conneted to the output of the Op Amp.The one end of the filament lamp is connected to the other end of the Parallel network consisted of a Capacitor and Resistor.The other end of the resistor witch forms the divider network with the filament lamp is connected to the output of the op amp.When power is supplied nothing happens.No osillation noting.I'll post the schematics when I'm at my PC I'm using my BB.
If anyone can help it would be appreciated.I don't know maybe the way I've setted up the circuit on the bread board is wrong.I really don't know.
Oh and the resistance of the lamp when it is off is 35.5 ohm witch is half of the resistor in the divider network for the inverted input of the op amp.