modified 9 years ago

Dual - Polarity DC Meter

00:47:45

Input positive or negative voltage, up to 15 volts, to positive side of op amp for upscale meter movement on 0-50 uA meter.
Use op amp with high slew rate and be aware high frequency may oscillate op amp and give erratic meter indications.  The 10 uf capacitor is to by-pass AC voltages.
Variable 1k resistor is to use known DC voltage to set meter for accurate indications.

published 9 years ago

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.