Pico ammeter


Posted on Jan 6, 2013

A very sensitive pico ammeter (— 1 V/pA) employs the amplifier in the inverting or current summing mode. Care must be taken to eliminate stray currents from flowing into the current summing mode. It takes approximately 5 for the circuit to stabilize to within 1% of its final output voltage after a step function of input current has been applied


Pico ammeter
Click here to download the full size of the above Circuit.

The internal diodes CR1 and CR2 together with external resistor Rl to protect the input stage of the amplifier from voltage transients.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

LC Resonant Frequency Meter
Optical-ttl-coupler
microcontroller Analog to Digital Converter and Negative Voltages
water level alarm circuit
1.2GHz VCO With Linear Modulation circuit using MAX2754
Egg Timer
Generating a Delayed Pulse Using The 555 Timer circuit
quartz clock timebase
Coop automatic controller circuit diagram



Top