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 […]
Voltage Regulator
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 […]
Simple 12V Power Supply Circuit with Filter Capacitor
Many electronic circuits require a DC power supply, while the mains provides AC power, also this Simple 12 V Power Supply Circuit with Filter Capacitor converts AC into 12V DC and delivers up to 2 A of output current. This circuit uses only a few components, making it simple, low cost, and easy to build, […]
5V High Current Buck Converter Circuit using IC MC34063
Many electronic circuits require a stable 5V supply, but the input voltage is not always constant; it may be 12V or rise to 30V, so a buck converter reduces the input voltage to a stable 5 V output. This 5V High Current Buck Converter Circuit using IC MC34063 reduces voltage efficiently and it also saves […]
5V USB to 1.5V or 3V DC Converter Circuit
Today, many small devices need low voltage for example 1.5V or 3V. A USB port provides a 5V output, so this circuit uses a buck converter to reduce the voltage to 1.5 V or 3 V. The MC34063 IC controls the conversion, making the circuit low cost, easy to build, reliable, and efficient; the IC […]