HOMELYLIFE DC Voltage Regulator DC 24V Step Down to 12V 20A 240W Buck Converter Reducer Power Converter Waterproof Module Transformer for Golf Cart(24V to 12V 20A)

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To measure an S5 sender (with bolt down head) measure from the underside of the flange to the bottom of the stem

Useful on both 12 and 24 volt systems — on 24 volt systems it reduces the voltage down to 12/13.8 volts, and on 12 volt systems it ensures a constant current. This 13.8V power supply circuit uses a regulator IC, LM340T-15. It keeps the level of constant voltage of 15V. Inside this IC has short circuit protection and prevents overheating. One voltage regulator works for multiple gauges, able to provide 12 volts to the whole dashboard and replacing the need for individual dropping resistors on a 24 volt system.Note: Q1-Q7 is 2N3055 NPN power transistor. Also, you may use TIP35 High-Power Transistors in TO-247. But it is more expensive than a 2N3055. Better protection For example, the transformer if you want 30A output current. So you need the least of 30A transformer. It is so big. By parallel with the transistor Q2, from the Q3 onwards. Each transistor can increase the current of 5A.

As an example; a standard Wema Wema 52mm analogue gauges will draw a maximum current of 130mA, so each 3A voltage regulator can supply power for up to 20 standard gauges. Each 5A voltage regulator can supply power for up to 38 standard gauges.Of course, you can buy a power supply that simple and effective with a variety of sizes. But if you build them with your own or your friends. It will be a great time while creating this project. And when completed, runs in its function. It will very proud. Figure 1 circuit, in normal conditions, the voltage between pin Adj and pin output is equal to a 1.25V stable that flow pass R1, R2 will have constant as well. Next look at the full circuit diagram again. At output pin of IC1 will be connected to the Darlington emitter follower with the transistor-Q1. Then, Q1 drives six transistors Q2-Q7 in parallel. Why connects transistor in parallel The voltage regulator provides a constant, regulated current and ensures that the gauge read-out does not alter with voltage fluctuations.

The output voltage of the high current 13.8V power circuit is equal to the voltage output of IC1 (15V) minus the voltage drop across the base (B)- emitter (E) of transistor driver (Q1) and the transistor through (Q2) and the voltage drop across R5 emitter of Q2.

At this level, it will be maintained voltage is better than on the electric of a car. Its output voltage can be changed from 11V to 16V. Imagine, you have a lot of power transistors, 2N3055. Because it is popular in the transistor power amplifier. One voltage regulator will replace all of the dropping resistors normally wired in-line on a 24 volt dashboard.