In this circuit design tutorial we will use a BC547 NPN transistor and BC557 PNP transistor with a normal push-button to build a soft latching power switch. This soft latch circuit doesn’t require any ...

Working of the Basic 5V Relay Circuit. In the above circuit, 5V relay is powered by a 9V battery. An ON/OFF switch is added for the switching purpose of the relay. At the initial condition when switch ...

Here are some DIY LDR switch circuits available on our website and the web. LDR switches are used to switch a relay or other device when light are present or absent. LDRs or Light Dependent Resistors ...

The circuit diagram of the light-activated switch is shown in Fig. 1. Base of pnp transistor T1 (BC558) is connected to 6V through a preset VR1 (2.2K), and to ground through resistor R1 (2.2K) and ...

Hello and welcome to the user manual for your newly delivered 3 Phase Automatic Changeover Switch Circuit Diagram. This guide is designed to help you get started with your product and provide you with ...

Circuit and working of Touch Switch. A simple touch switch circuit diagram is shown in figure 1. It is built around four BC547 transistors (T1 through T4), a 5V single changeover relay (RL1), two ...

Two lamps connected in series with an open switch and a cell The circuit diagram shows a circuit with two lamps connected in series. If one lamp breaks, the other lamp will not light. The current ...

The modern electronic device should be able to provide stable voltage and current under a variety of conditions. The LDO regulator used in the electronic device is a system that requires various ...