This modulated transmitter for a light beam communication system was found in the 1991 Electronics Experimenter Handbook. The circuit modulates a LASER diode.
This amplified circuit was found in a magazine for radio amateurs 73 of the 90s. The circuit uses an...
We found this circuit in a 1980s publication on espionage. The transistors support modern...
This 6-transistor receiver was manufactured in Japan in the 60s. The circuit is superheterodyne and has a 6V...