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Power Supplies: LED Power Supplies & Circuits

Light Emitting Diode Power Supplies and Electronic Circuit Schematics

0 Comments - in LED Circuits
Circuit diagram for an ultra low-noise driver/supply circuit for white LEDs, using the IC LTC3201. Ensures a stable brightness in white LED driven items.
An extremely simple and cheap DC power supply with variable voltage (1.2-25 Volts) control. The circuit uses an LM317 integrated voltage regulator Ic.
An LED circuit that alternately flashes two LED's on and off. Perfect for a hazard or warning sign. When one LED is on the other is off.
0 Comments - in DC Power Supplies
A very simple variable power supply with a DC output voltage adjustable from 1-3- Volts, with a maximum DC current of 5 Amps. Uses LM338 DC voltage regulator IC.
0 Comments - in DC Power Supplies
Variable-voltage DC power supply circuit. The output DC voltage is adjustable from 0.7-24V, with current limiting range from 50mA up to 2 Amps. Main transistor is the 2N3055.
Photo: Positive Adjustable Power Supply Positive Adjustable Power Supply
Compact positive (K124) and negative (K125) adjustable power supply +/-
Photo: Hobby Power Supply Kit using LM7805 Hobby Power Supply Kit using LM7805
This is a practical battery eliminator for your projects. This is a basic power supply using two 7805 regulators; input up to 20 VAC from a transformer. There are two outputs; one regulated at 5 VDC, and the other one is variable. Includes plastic case. T
Photo: Bench AC/DC Power Supply Kit Bench AC/DC Power Supply Kit
Build this educational Deluxe Bench DC Power Supply Kit
Photo: Bench DC Power Supply Kit Bench DC Power Supply Kit
Build this educational Deluxe Bench DC Power Supply Kit
Photo: Variable Power Supply Kit Variable Power Supply Kit
A handy portable power supply with a variable output voltage of 15VDC. Mounted in a rugged bakelite case.
0 Comments - in Lights
A low power consumption circuit that uses few components in order to power a 6 inch fluorescent tube (AC) from 12 Volts DC.