Whatever the methods or even then financial means you have to make your circuits work, the power supply should rank high if not Number One in your considerations. The design block simply called “power supply” is hugely underrated both in electronics creation and repair. Yet, the “PSU” has enormous diversity and comes in wildly differing guises like AC/DC, generator, battery (rechargeable or not), PV panel, benchtop, linear or switch-mode, to mention but a few. The output ranges are also staggering like nano-amps to kiloamps and the same for voltages.
This special covers the features and design aspects of power supplies.
What to be aware of when using (Lithium) batteries.
Fixed-Voltage Power Supply using Linear Regulators
The best result right after batteries.
Light Energy Harvesting
A small solar panel is used in an energy harvesting project to manage and charge four AAA cells.
Mains Powered Adapter Design
Basic circuits and tips for transformers, rectification, filtering and stabilization.
LM317 Soft Start
The high inrush current pulse should be avoided.
Some suggestions to keep the power loss in the linear regulator as low as possible.
- Worksheet: The LM117 / LM217 / LM317 Voltage Regulators
Low voltage but lots of current… or not?
- JOY-iT RD6006 Benchtop Power Supply Kit
- Siglent SDL1020X Programmable DC Electronic Load
Balcony Power Plant
DIY solar balcony = speedy payback!
DIY LiPo Supercharger Kit
From handcrafted to mass market
Dual-Anode MOSFET Thyristor
Faster and less wasteful than the old SCR
Do not throw away, squeeze!
High-Voltage Power Supply with Curve Tracer
Generate voltages up to 400 V and trace characteristics curves for valves and transistors
High Voltage Supply for RIAA
For RIAA tube preamps and other applications.
A lab power supply for connected devices
Phantom Power Supply using Switched Capacitors
Voltage tripler using three ICs
The SMPS800RE Switch-Mode Supply for the Elektor Fortissimo-100
Reliable, light and affordable
Soft Start for PSU
Be nice to your power supply – and its load
0-30 V, 3 A compact switch-mode lab power supply
- Soft Start for Step-Down Switching Regulators
- Low Loss Current Limit
- Powerbank Surprise
- A Virtual Ground
- Battery Maintainer
- Battery Pack Discharger
- Connecting Voltage Regulators in Parallel