Thanks so so much for your help.Yes, but you will need to change the capacitor to a.001uf or 1nf.
Steve G
Thanks so so much for your help.Yes, but you will need to change the capacitor to a.001uf or 1nf.
Steve G
Of course, At the attachment...Could you post your .asc file?
Thanks.
Nope. Note the relationship between the LM358 pin 4 and the transistor emitter.Revised schematic using the TL082. Should get similar performance with the LM358]
What about it? That schematic is using a TL082 that was breadboarded and confirmed with the components listed.Nope. Note the relationship between the LM358 pin 4 and the transistor emitter.
ak
Looks like the transistor is in backwards from the photo. Check the connections on pin5. The two 100K voltage divider resistors do not look connected correctly and a resistor is missing from pin5 to the dividerWhat is wrong with my circuit
The LM358 input common mode range includes and exceeds the negative rail (ground in the original schematic) and the transistor switches inverting input to ground. So while the input is grounded, the input stage still is in its linear active region. The TL082 input common mode range extends only down to Vee+3V. More importantly, when the transistor switches on it is not pulling the inverting input down to the negative rail. I think that 12 (or 9) V difference is important to the circuit's operation.What about it? That schematic is using a TL082 that was breadboarded and confirmed with the components listed.
As noted, it's likely an error in wiring the circuit. It's very easy to make mistake when doing a solderless breadboard circuit.What is wrong with my circuit