V/I converter accommodates grounded load


Posted on Aug 18, 2012

The voltage-to-current (V/I) converter in Figure 1 uses three common op amps, two medium-power transistors, and only a few passive components. The first op amp (IC1) inverts the sum of voltages VIN and VOUT to V1=-(VIN+VOUT). The second op amp (IC2) and transistors Q1 and Q2 invert this voltage to produce VIN+VOUT.



The formula shows that the value of IOUT depends only on VIN and R6. Voltage follower IC3 reduces to a negligible level the current from the circuit output to IC1. The advantages of the circuit are: load-grounding possibility; simple control of IOUT/V




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Coil Coupled Metal Detector
High quality pc audio amplifier
Arduino 2-axis servo solar tracker
lm1881 video sync for tv and lcd monitor separator
lantern dimmer flasher circuit diagram
Water Level Indicator With 7-Segment Display PCB
Atmel AVR and 8051 series ISP programmer
DIY Dual Fan Controller Project
Coship CDVB3188V receiver switching power supply circuit



Top