We found this circuit with the LM3914 IC in a Radio Electronics magazine from June 1985. The circuit is intended for monitoring the battery voltage through an LED bar.
Measuring capacitances and resistance this simple instrument was found in Radio Electronics...
The LM143 integrated circuit is a high voltage operational amplifier from National Semiconductor that is...
We found this circuit in the November 1985 issue of Radio Electronics magazine. It uses TTL...