This circuit was found in February 1976, Radio Electronics magazine. The circuit is quite sophisticated using a fast-acting (thermometric) sensor and analog indicator.
Found in documentation from the 1980s, this amplifier uses an integrated circuit from the time....
We obtained this circuit from a 1993 documentation. The circuit has 7 current ranges that are...
This circuit was found in an 80's General Electric documentation. The circuit uses uncommon...