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Archives for October, 2009

Introduction to PCB Manufacture for Hobby

Introduction to PCB Manufacture for Hobby

50 watts audio amplifier

50 watts audio amplifier using LM3876

How The History of Logic PLC ?

When production requirements changed so did the control system. This becomes very expensive when the change is frequent. Since relays are mechanical devices they also have a limited lifetime which required strict adhesion to maintenance schedules. Troubleshooting was also quite tedious when so many relays are involved. Now picture a machine control panel that included […]

PUSH-ON and PUSH-OFF ELECTRONIC SWITCH Circuit Diagram using IR – Infrared photography

PUSH-ON and PUSH-OFF ELECTRONIC SWITCH Circuit Diagram using 555, PICAXE-08, 1N4148, 1N4004, PN100, 7805

Relay driver circuit diagram for application

Relay driver circuit diagram using 4584, BC549, BD139

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