This preamplifier for phonographic capsules using FET was found in 90s American documentation. Consumption is very low. The power can be obtained from the amplifier circuit with which it works.
This project was found in a 1982 documentation. Super-regenerative receivers can combine great...
This circuit can be used as a direct optical link or by optical fibers. We found it in a...
The purpose of this circuit is to alternately activate a two-tone horn with low sound and a horn...