This circuit converts BCD inputs to analog voltages. The operational amplifier must be powered according to the desired output voltage range. The circuit is from documentation from the 90s.
This configuration shows the simple way to use a varicap diode to tune an LC circuit. Capacitor C1 must be...
This circuit consists of a touch switch with optical isolation, using CMOS integrated circuits. The...
Within a range of values, this circuit converts input voltages into corresponding currents. The...