Found in a 1970 documentation, this circuit makes use of 741 operational amplifiers that are common today. Note that the power supply must be symmetrical.
The pass-through alarm we present uses an infrared (IR) emitter as a sensor. When cutting the...
In this circuit, the output voltage is slowly established, thus avoiding the impact when...
This is the minimum amplifier configuration with the LM380 and can provide an output of up to 2.5...