We found this circuit in the March 1980 Radio Electronics magazine. The circuit used is the HA2400 released at the time. The power supply must be symmetrical.
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...