We found this circuit in a 1967 El3ectronics World. The transistors are from the era but can be replaced by current equivalents. The circuit is for 5 A loads.
For measurements between 30 and 40º C this circuit was found in the documentation of 1968. The...
This circuit was found in the ON Semiconductor's Thyristor manual of the 1980s. The high quality...
Found in an old Radio Electronics, this circuit applies to frequency meters for frequencies up to 100 MHz....