User:Ron Broberg

Hollow Lerd

Variable Regulated Power Supply

http://www.cqham.ru/projects/vps/vps.htm

The circuit to the 'left' of C2 can be replaced by a computer ATX power supply.

The circuit to the 'right' of C3 can be replaced by an external voltmeter.

The center part of the circuit seems to be a fairly common configuration for use of the LM317.

555 based solar charge controller project

http://www.mdpub.com/555Controller/

Built, not yet tested

Chispito Wind Generator

http://makeprojects.com/Project/Make-a-Wind-Generator/9/1

Built, not yet tested

Based on treadmill motor, 3' blades, 28 sq ft swept area