by arnoldc » Wed Sep 07, 2005 7:17 pm
What you will need, assuming you will build your own from scratch.
1 x OPA2134 (dual opamp) or equivalent
2 x 100K resistor
3 x 10K resistor
2 x 1K resistor
2 x 4K7 resistor
* all resistors 1/8 or 1/4 watt (pick your poison - metal film, carbon, etc. with the exception of both 4K7 and one 10K, everything is in the signal path)
2 x 220uF 50V electrolytic capacitor
2 x 0.1uF 50V film capacitor (pick your poison here as this is in the signal path)
1 x 10K volume potentiometer (mini type, PCB mount)
2 x 3.5mm stereo jack (female)
1 x low-current mini LED (i prefer blue)
1 x SPST mini toggle switch
1 x 8-pin IC socket
1 x 9V battery holder
1 x 9V battery
You will also need a PCB. Those used for breadboarding is perfect.