DC power supply schematics

Build a robust and reliable 4-stage power supply unit for your electronic circuit testing – providing precise 12V, 9V, 6V, 5V and 18V outputs to safeguard your valuable components and ensure accurate results.... [read more]

Design a robust and versatile DC power supply capable of delivering up to 3A, ideal for prototyping and powering your electronic projects. This adjustable power supply offers a stable 3 to 30V output, perfect for experiments and builds.... [read more]

Build a robust and reliable power supply with this simple yet powerful circuit. The 7809 regulator delivers up to 2 amps, ensuring a clean and stable 5V output. Includes reverse polarity protection with a 1N5400 diode and optimized filtering for logic circuits with a 100nF capacitor.... [read more]

Build your own versatile adjustable power supply, generating precisely controlled voltages from 1.3V to 22V with up to 1A of current. This compact, easy-to-assemble circuit, featuring an LM317T regulator, unlocks limitless design possibilities.... [read more]

Build a versatile current-limited power supply with adjustable outputs from ±5V to ±15V, using an LM317 and LM337 for precise current control and stable regulated outputs.... [read more]

Build a robust and efficient power supply for your hybrid amplifier, utilizing standard components and achieving exceptional performance with the LT1074CT. Generate up to 170 VDC and stabilize 16 V for your buffer stage, minimizing losses and maximizing amplifier output.... [read more]

Build a powerful 18V DC power supply circuit with a 1.5A current capability. This simple schematic utilizes a 2N3055 transistor and readily available components, perfect for your next electronics project.... [read more]

Design a robust and efficient 5V power supply for minimal current appliances, utilizing a simple circuit to minimize heat dissipation and protect components from damage. This innovative design employs a key zener diode to achieve stable voltage output and incorporates a crucial overvoltage protection circuit with a JVR varistor. Unlock the secrets of low-power electronics and build a reliable power solution for your projects.... [read more]

Build a robust and versatile DC power supply capable of delivering up to 24V and 2A, perfect for experimenting and prototyping. This adaptable circuit offers reliable performance and short-circuit protection, empowering you to create innovative electronic projects.... [read more]

Build a robust 155V high-voltage regulator for valve circuits, utilizing just three transistors and achieve stable power for your hybrid amplifier projects. Discover the secrets to this powerful design, including current limiting, temperature considerations, and optimized performance for demanding applications.... [read more]

Boost your regulator current up to 1500mA with this simple circuit, utilizing a TIP2955 transistor and a 78xx regulator for enhanced power delivery and limitless design possibilities.... [read more]

Transform your smoke alarm with this ingenious circuit, providing a robust 9V battery backup from your 12V burglar alarm system, extending battery life and eliminating annoying beeps.... [read more]

Build a dynamic switching power supply with an 80% efficiency, utilizing a Schmitt trigger and a high Q inductor to generate adjustable voltages up to 14 volts.... [read more]

Build a robust and precise power supply circuit using op-amps, achieving a stable output from 0 volts to ±8 volts. This design incorporates current limiting and heat dissipation strategies for reliable operation and optimal performance.... [read more]

Build a powerful and versatile regulated power supply, adjustable from 6 to 25 volts and capable of delivering up to 3 amps. This detailed schematic guides you in constructing a robust power solution for your electronics projects.... [read more]

Boost your power supply designs with this innovative circuit, maximizing output current to 4.3 amps using a sophisticated current sharing technique. Easily control and limit current flow with precision resistors, ideal for demanding applications and optimized heat dissipation – discover how to build a robust and efficient power supply.... [read more]

Design robust voltage regulators with the LM317T, delivering up to 1.5 amps and a versatile 1.25 to 37-volt range. Build resilient circuits with integrated current limiting and thermal shutdown – perfect for ambitious projects.... [read more]

Build a powerful DC voltage control circuit with a 12-volt lamp, achieving up to 2 amps of output current and a 25% efficiency factor through a simple transistor configuration.... [read more]

Build a robust 15V DC power supply circuit with a peak current of 1A, utilizing a 2N3055 transistor and a standard 220V/18V transformer. This simple yet effective design provides a stable and reliable power source for your electronics projects, perfect for inspiring innovation.... [read more]

Build a powerful voltage converter to transform 35V input into a stable 1 to 30V output, ideal for your electronic projects. This circuit utilizes the LM317 and LM337 regulators, delivering up to 1A of current with exceptional noise reduction and cost-effectiveness. Maximize your project's efficiency and reliability with this robust design.... [read more]

Build a robust and reliable DC power supply with this simple schematic, utilizing an LM723 regulator and a 2N3055 transistor to deliver up to 30V DC. Maximize performance with a 220VAC/27V 4A transformer and a 100V 5A bridge for optimal current delivery.... [read more]

Build a powerful 3A DC power supply delivering 40V to 60V, perfect for boosting your circuits and achieving exceptional voltage stability. This design provides a robust foundation for innovation, featuring a simple yet effective circuit with easy-to-source components. Unlock your projects’ full potential with this adaptable power solution.... [read more]

Build powerful voltage and current regulator circuits using the L200 IC. Explore two innovative schematics – one for high current regulation with adjustable outputs and another for programmable voltage and current control. Unlock limitless design possibilities with these essential building blocks.... [read more]

Build a robust current limiter circuit to safeguard your power supply and sensitive electronics. This innovative design allows you to set a precise current limit – up to 70mA – protecting your components during initial power-ups and soak tests. Maximize your project’s reliability with this simple, cost-effective solution.... [read more]

Unleash your circuit designs with this 1-amp variable-voltage PSU, expertly adjustable from 3v to 24v. Precisely control current limits from 10mA to 65mA, safeguarding your projects during initial power-ups and rigorous soak tests. Build confidently knowing you have the power to shape your electronics.... [read more]

Build a robust and reliable 12-volt power supply for your alarm system with automatic battery backup. This unit delivers up to 1-amp, ensuring uninterrupted protection, and features a maintenance-free battery designed for up to five years of dependable performance.... [read more]

Unlock the potential of your experimental circuits with this dual-rail power supply, delivering ±2.5V to ±15Vdc with precise tracking and robust current limiting – up to 600mA per rail. Build a reliable power source for repairs and research, avoiding costly components and complex designs.... [read more]

Build a powerful virtual ground buffer circuit with this innovative design inspired by miniaturization expert Sijosae. Utilize readily available components like the 2SC1384 and 2SA684 transistors to create a robust and cost-effective grounding solution. Achieve superior performance compared to resistive dividers and unlock exciting possibilities for your projects.... [read more]

Build your own reliable +5V power supply for digital electronics projects. This simple circuit, utilizing a readily available transformer and a 7805 regulator, provides a stable 150mA output, expandable to 1A with cooling. Easily constructed for just a few dollars, it’s perfect for experimenting and powering your electronics creations.... [read more]

Unlock the potential of professional condenser microphones with this detailed guide. Discover the secrets of 48V phantom power, precision resistors, and a sophisticated circuit design delivering a stable 48V output capable of powering up to 40 microphones. Build a robust power supply featuring a 72V DC output and a TL783KC regulator, ensuring optimal performance and a dynamic range exceeding 48V.... [read more]