This 3-valve receiver was found in a publication by Edelman from 1924. The circuit has two supply voltages, B being 60 to 90 V.
When powering this circuit by activating S1, the lamp turns on smoothly in a time determined by...
The Texas Instruments TPS7A92 integrated circuit consists of a low-voltage (LDO) linear voltage...
This Radio Electronics circuit, in an 80's edition, decodes the 67 kHz signal used at the time to...