IC regulator protector circuit when load short
Power supply
Today I have a little idea is the ICs regulator protector circuit in a load short-circuit. We design for the 12 volts DC regulator only. For example: IC-7812, or others 12V power supplies. How it works Figure 1 is the circuit diagram In the circuit, IC3-7812 as the 12 volts regulator will supply voltage to load,through the contact C-NC of the relay RY1. In normal,the point A will has state is “1”, cause the output of IC1/1 is “0”, so no current to trigger gate of SCR1. Thus the RY1 not works. The IC1/2 and LED1 are used to display …
Simple electronic fuse circuit
Mini Projects
The Fuse is a type of electrical equipment to the poor. Because it sacrifices itself. To protect the safety devices in the circuit. In the case of current flow in circuit too much. Until it melted. Due to an error in the circuit. Fuse sold in the market. Can be used once. The structure is a glass cylinder with an alloy of lead wire is connected between the two terminals.When the current through it too much, Alloy within is temperature rises until the melting.Makes wires were cut off. In some experiments a electronic circuits require a fuse protection. Circuit may …
DC power supply protection circuits
Power supply
The 3-pin regulator IC as a 78xx numbers have get very popular. I also like it because it is convenient and affordable. Although it is a short circuit within it. But very often, it would have been damaged when a short circuit. I think that should be a good short-circuit protection circuit.As an example, I would suggest a two circuit. We use a simple technique. The more secure without having to change the IC-regulator frequently. Fuse electronic for ic regulator Power supply, plus the ground, using current up to 1 Amp.Normally used, IC Regulator no. 78XX. When used to power …
Use SCR help give fuse torn fast
Alarm systems
If fuse slow get into trouble not good may make the circuit can is damaged. Normally fuse torn when current change too much. But more will torn must use the period of time which may late go to all right with regard to add SCR go to make fuse torn fast go up by when voltage exceed more at ZD fix. Make SCR work have current flow through very quickly. Make power supply and load safety. An example is if friends use load 5V as a result should use Zener Diode 5.6V sizes etc. Read Related circuits post. Blown Fuse …