We found this circuit in a 1980s American documentation. The operational amplifiers of the integrated circuit used can be common types in an experimental setup.
This dual balanced modulator configuration was obtained in a 1980s telecommunications...
This thermostat was found in a 1997 publication. It can be powered by 6 V with the use of a...
This circuit produces fast light pulses in na incandescent lamp. Pulse rate is adjusted by P1. The...