Dual Op Amp Wiring Diagram. Lm258 is dual operational amplifiers ic and is a member of lmxx family. Introducing if you want the simple dual variable power supply circuit.
For others seeking a a clearer understanding for the geophone seismic sensor amplifier i have redrawn the circuit as a functional schematic rather than a wiring diagram. The circuit uses a supply voltage for the op amp. Supply voltage vcc 20.
Pin7 is the positive voltage supply terminal and pin4 is the negative voltage supply terminal.
Transistor bc547 q1 and q2 collector terminal is connected with vcc and transistor bc557 q3 and q4 collector terminal is connected with ground. Use r5 to adjust the gain of op amp lm358. The op amp pid controller. The ic draws in power from these pins.