This circuit was found in a 1980s documentation. The circuit uses common components having an output of 10 Hz per centigrade degree of variation. The sensor is a transistor.
This simple tester was found in a Popular Electronics from the 90s. The circuit is powered by two 9 V...
The trip circuit for this alarm is given in CB16765E. The circuit uses common components and acts...
We found this circuit in a technical documentation on thyristors from the 70s. The circuit is set...