This receiver is from a 1924 Gernsback publication. The receiver has good efficiency when powered by the indicated voltages. Listening is through a high-impedance phone.
November 2016 - Texas Instruments' new ISO773x triple channel digital isolators with 5,000 V...
We found this circuit in a documentation from the 90s, which can be adapted in most cars of the...
The first configuration we show is a flip-flop that can be triggered using two pressure switches of...