Flag Counter
Since 08.08.2014
Counts only, if "DNT = disabled".

Your IP is
Valid HTML 4.01 Transitional Creative Commons Lizenzvertrag
We love the King
Your valuable opinion :
4 stars

Avg. 4.00 from 6 votes.

PETH-1074.php   5585 Bytes    21-10-2015 08:38:27


A small power supply for universal use.

This project describes a little power supply, based on a LT1074, adjusteable from 2.5 to 50 V, delivering much more than 1 Amp. Yet another nice to have building block :-)

• Output 2.5 to 50 VDC @ 3 A regulated low ripple DC voltage
• Onboard potentiometer for output voltage adjust
• Onboard bridge rectifier for AC voltage input
• Screw Terminal connectors for input and output
• Four mounting holes of 3.2 mm each
• PCB dimensions 52 mm x 45 mm

PETH-1074, LT1074

The PETH-1074 power supply - small and useful ...

✈ Circuit

The circuit consists of a bridge rectifier, build with 4 diodes (1N5062), then a storage capacitor 2200 µF, 35V (may be changed), an LT1074 and a 47 µH inductor. An SB560 schottky diode was used. The circuit is not that new or stupendous, but it is a handy circuit which should be in every library of building blocks. Designed for educational purposes.

✈ Downloads

✈ Performance

In order to test the performance, we built some of those circuits. We used the following equipment : LD-300 DC ELECTRONIC LOAD BY TTI, FLUKE 8846 A to do the measurements. One voltage which is very often used is +5 V. The diagramm below shows the measured characteristic.

PETH-1074 Kennlinie

PETH-1074 Step Response

Step Response when current is increased from 500 mA to 3000 mA. When dissipating a lot of power, a heatsink mayst be adviseable. The region with the higher ripple corresponds to the higher current.

✈ Share your thoughts

✈ Nothing more to be seen below this point ? Maybe your browser blocks the facebook iframe.
The webmaster does not read the comments regularly. Urgent questions should be send via email.

t1 = 3943 d

t2 = 801 ms

★ ★ ★  Copyright © 2006 - 2017 by  ★ ★ ★ Impressum