DIY adjustable voltage regulator

Electronics Help Care August 10, 2025 Voltage

This is the DIY adjustable voltage regulator for 30 volts and 2 amperes. can control the voltage and amperes. Here, use 2 adjustable volumes to control the voltage and amperes. Here, use a 2N3055 transistor. It’s an NPN transistor. We can also use another transistor.

Type Designator is 2N3055. The polarity is NPN. The maximum Collector Power Dissipation is 117 Watts. The maximum Collector-Base Voltage is 100 Volts. the maximum Collector-Emitter Voltage |Vce|: 70 Volts. The maximum Emitter-Base Voltage is 7 Volts. The maximum Collector Current is 15 A.

How to check out the original transistor:

It’s how to check out the original transistor. We have a significant problem identifying the original transistors. Now, there are many fake transistors on the market. For this, we have to face a lot of issues to repair or make electronic circuits. We use the fake one and get problems. We can’t check. It’s not our problem. The problem is the importer. They don’t import the original one.

How to check out original transistor?

This is 1000 watts amplifier circuit diagram using 2SC5200 and 2SA1943. This circuit has speaker short-circuit protection. This circuit is a stereo amplifier. It’s a PNP and NPN amplifier. 2sc5200 is an NPN transistor, and 2sa1943 is a PNP transistor. We can also use another PNP and NPN transistor. One transistor can take 1.3 amperes. Here we can use 30-0-30 voltage and 10 amperes. 0 to 30 positive and 0 to 30 negative voltages. 0 to positive is 0 to 30 volts 10 amperes. another 0 to negative is 0 to 30 volts 10 amperes. So, here we count 30 volts and 10+10=20amperes.

We know that voltage X amperes= Watts. So, our voltage is 30, and the amperes are 20. 30X20=600 watts we can get. Here in this video, we can see that we use 25-0-25 voltage and 10 amperes.