This circuit was found in the February 1980 issue of Radio Electronics magazine. The digital circuit was shown in two parts, using 20 LEDs in a configuration with the LM3914.
This circuit, obtained from the component manual used, has an ultra narrow 1 kHz range given by...
The figure shows how to implement a No – OR or NOR function with 1 general purpose transistor. The supply...
According to its author, this device indicates the amount of force applied to the sensors. The...