This circuit was found in the 1967 RCA SCR manual. The circuit generates approximately 300 V at a frequency of 1 kHz. The components are from the era.
This circuit was obtained from a Hands-On Electronics, an American magazine from January 1987. The...
This receiver for listening to the TR-23 phone was manufactured in Japan in the 1960s. The circuit is...
This astable multivibrator with an operational one at the time was found in the National...