Suggested by Raytheon in 1967 documentation this circuit uses a lightbulb and LDR optical coupler of the time. The transistor determines the maximum current.
This circuit was found in a 1977 documentation. The gain is 3 dB and instead of the original...
This DC-DC converter was found in old RCA documentation. The circuit operates at 15 kHz. The...
March 2017 - Texas Instruments is already making available through Mouser Electronics the LP5907 an...