This circuit was found in Motorola's 1968 documentation. The SCRs are then replaceable with current equivalents. The lamp is 24 V according to the power supply.
The circuit bellow shows how four inverters [NAND, NOR or Inverters] Kim - This could be NAND,...
This circuit, from a 1978 publication, emits a modulated signal when the fine sensor is...
This commercial radio was manufactured in Japan in the 1960s. The circuit uses 4 transistors and...