This is one of the many versions of this type of indicator that the reader can find on our website. This is from Mullard's 1969 documentation. The indicator is 95 uA (100 uA).
This circuit with junction field effect transistors was found in documentation from the 1980s. The...
This DC-DC converter was found in old RCA documentation. The circuit operates at 15 kHz. The...
This circuit was obtained in an Electronics World of 1968. The operational amplifiers ones are...