A PWM-controlled regulator, this time using a logic gate IC, op-amp, and resistors and capacitors to buffer the PWM signal.

One of the most basic electrical circuits is the resistor-capacitor circuit driven by a DC power supply, as shown in Figure 1. A step further than the circuit in Fig. 1 is the circuit show in Figure 2 ...

Figure 1 gives a simple circuit for the PUSH ON, PUSH OFF function with only a few inexpensive components. In this design, the output is connected to the input of the gadget when you press the push ...