The SilentSwitcher, A Quiet Mains-free Power Supply
https://www.electronics-lab.com/silentswitcher-quiet-mains-free-power-supply/
Audio projects become smaller over time with the rapid advancement of technology. A traditional power supply is still considered large compared to audio projects size constraints and it may not fit such delicate applications that need to deliver a good sound with zero noise. Jan Didden, audio specialist who is known for his own publications […]
$14.5 All-Purpose Switched-Mode Power Supply
https://www.electronics-lab.com/14-5-purpose-switched-mode-power-supply/
Switching technology devices and integrated circuits are growing fast providing solutions that obtain power for different kind of circuits and devices, and they are proposed in different variations. A useful little known kind which is suitable for mixed supply systems is called SEPIC,single-ended primary-inductor converter. Torpedo is a switched-mode power supply with a SEPIC configuration […]
EspoTek Labrador – Oscilloscope, Signal generator, Power supply in one tiny board
https://www.electronics-lab.com/espotek-labrador-oscilloscope-signal-generator-power-supply-one-tiny-board/
EspoTek Labrador is a small, portable, USB-connected electronics lab-on-a-board that includes an oscilloscope, waveform generator, power supply, logic analyzer, and multimeter. The EspoTek Labrador plugs directly into a solderless breadboard and connects to any Windows, Mac, or Linux computer via microUSB. A custom software interface lets you see and interact with your waveforms on-screen. Careful […]
ElbSupply – Linear Bench Power Supply With Constant Current and Voltage Modes
https://www.electronics-lab.com/elbsupply-linear-bench-power-supply-constant-current-voltage-modes/
A lot of power supply designs are here and there on the Internet, but not all of them have constant current and voltage modes. You can read the following Q&A in electronics.stackexchange to learn what constant current and voltage modes mean. Elia over Hackaday.io built a linear bench power supply with the following features: Output […]
Dual output step-down charge pump operates without inductors
https://www.electronics-lab.com/dual-output-step-charge-pump-operates-without-inductors/
Linear Technology’s LTC3256 is a high voltage low noise dual output power supply, which takes a single positive input and generates 5V and 3.3V step-down supplies with high efficiency and no inductors. by Julien Happich @ edn-europe.com The device features a wide 5.5V to 38V input voltage range and includes independently enabled dual outputs: a […]
A Bench Power Supply using computer PSU
https://www.electronics-lab.com/bench-power-supply-using-computer-psu/
As we know, PSU in computers provides various DC voltages, 3.3V, 5V and 12V. These 3 levels are the most common ones needed in our labs, so usually PC PSUs are used by a lot of makers and hackers as their personal bench power supply. The PSU has a standard connector called ATX, you can […]
Dual Adjustable Regulated power supply 1.2V TO 37V DC
https://www.electronics-lab.com/dual-adjustable-regulated-power-supply-1-2v-37v-dc/
This project is a solution to power up most of devices or projects requiring dual (+/-) adjustable power supply. The circuit is based on LM317 positive and LM337 negative voltage regulators. LM3X7 series of adjustable 3 terminal regulators is capable of supplying in excess of 1.5A over a 1.2V to 37V DC output range. On […]
Adjustable HV Power Supply for Stompbox
https://www.electronics-lab.com/adjustable-hv-power-supply-stompbox/
This SMPS can be powered with low input voltage, from 5 VDC to 15 VDC and provided adjustable Output Voltage: + 92 Vdc to +340 Vdc. Can be used too, as power supply, for the Xenon Lamp, Nixie tube Clock, VFD display, Magic Eye, Neon, and too many others electronics circuits who need HV power […]
5V Step Down DC-DC Converter
https://www.electronics-lab.com/5v-step-dc-dc-converter/
The Tiny Step-Down DC-DC converter project provides 5V 500mA output from supply input up to 25V DC. MC34063A IC is heart of the project from on semiconductor. The MC33063A is a monolithic control circuit containing the primary functions required for DC-DC converters, This device consist of an internal temperature compensated reference, comparator, controlled duty cycle […]
Teardown: 12V AC adapters
https://www.electronics-lab.com/teardown-12v-ac-adapters/
Michael Dunn has done three teardowns of the worst 12V adapters and what he found is interesting. Yes! Can you believe it? This board used to be in another adapter housing, or more likely, in an end-product. It seems Chinese manufacturing has sunk to a new low: repackaging used and/or surplus power supplies. On the plus […]