0-1V to 4-20 mA Converter
This two opamp circuit converts analog voltage signals to current (sink) signals in a proportional manner. Current signals are more immune to noise and cross talk, hence long wires can be used. Voltage Signal...
Category: Opamp-Circuits
Simple Mains Voltage monitor
This Circuit helps in the monitoring of mains supply voltage. It does not use a isolation step down transformer. This has to be constructed only by skilled people with knowledge of safety requirements. C1...
Simple Thermocouple Amplifier
The OP07 is in a non inverting amplifier so as not load the mV of thermocouple, the zeners are to protect circuit if junction contacts heaters or the earth gets broken. Thermocouple and Pt-100...
Ramp Generator – Triangle Wave Generator
Two questions on Ramp Generators – I need a circuit design for a ramp generator. The ramp generator circuit that I’m looking for is a 1khz ramp generator capable of + to -50 v...
Precision Attenuator for Digital uC Control
When Instruments are designed a analog front end is essential and also as most equipment have digital or microcontroller interface the analog circuit needs to have digital access. The Circuits DACT0008 and DACT0009 are...
Precision Amplifier with Digital uC Control
When Instruments are designed a analog front end is essential and also as most equipment have digital or microcontroller interface the analog circuit needs to have digital access. The Circuits DACT0008 and DACT0009 are...
Using Thermocouple with DMM or DVM
In the circuit, use only metal film resistors (MFR) of 1 per cent tolerance, as this is an instrumentation application. Power supply should be a stable +5V, -5V supply, for which one can use...
AD590 based Temperature Sensor
Learn how to use the AD590 to measure environment temperatures for display, logging or cold junction compensation.
