This ultrasonic digital remote-control transmitter was found in the January 1976 issue of Radio Electronics magazine. The components are from the period. The IC is from the period.
Found in an article in the August 1971 Radio Electronics magazine, this circuit supports 106...
This sensitive circuit was found in a Texas Instruments optoelectronics manual. The transistors can be...
This circuit was found in a Japanese publication from the 1960s. It uses germanium transistors and is powered...