The 7805 is a popular voltage regulator IC because it provides a fixed 5V output and offers easy operation; however, it can deliver only about 1A of output current, which limits its use in high current applications. Sometimes we need more current for our motors, relays or microcontroller project with many modules, so to solve […]
Transistor Circuits
0-20V Regulated Power Supply Circuit using Transistors
A power supply plays an important role in electronics because every circuit requires a proper DC voltage, but however, a fixed voltage is not always sufficient, so many applications require an adjustable voltage supply. This 0–20V regulated power supply circuit using transistors is simple, low-cost, and uses readily available components, also beginners can build it […]
6V to 15V Op-Amp Based Power Supply Circuit
In this project, we build one 6V to 15V Op-Amp Based Power Supply Circuit, as this circuit, give output voltage from 6V up to 15V and its current can go near 2A, because we are using 741 op-amp and 2N3055 power transistor. So output become stable and also, strong for load. The circuit is simple, […]
38V Linear Power Supply Circuit using Transistors
Power supply plays a very important role in electronics, as every circuit needs stable DC voltage and sometimes we need high voltage like 38V DC, so this is the main purpose of this circuit. This 38V Linear Power Supply Circuit using Transistors uses 2N3055 and BD139 transistors, as 2N3055 is very popular power transistor and […]
0-30V Transistor Based Variable Power Supply Circuit
This is 0-30V Transistor Based Variable Power Supply Circuit which gives adjustable output voltage and maximum current is around 2A. The main power transistor is 2N3055 and it works as series pass transistor in the circuit, since, it is linear type regulator the output is smooth and stable. Therefore, it is good for lab testing […]
2N3055 Based 12V DC Voltage Regulator Circuit
This post is for simple 2N3055 Based 12V DC Voltage Regulator Circuit, which gives stable 12V output and is useful for power supply projects; for example, battery charger, amplifier supply, small lab supply and this circuit is easy to build. The circuit uses low cost, readily available components and it operates as a series-pass transistor […]