Bowden's Hobby Circuits

A small collection of electronic circuits for the hobbyist or student. Site includes over 100 circuit diagrams, links to related sites, commercial kits and projects, newsgroups and educational areas. Most of the circuits can be built with common components available from Radio Shack or salvaged from scrap electronic equipment. Most all of the circuits have been built and tested and believed to perform as described, however possible mistakes may be found.

Digital/Computer 16 Bit PC Serial Port Receiver (CMOS) 24 bit ISA card Installs into your computer. Parts, plans, schematics and programmng available. Also may be purchased as a kit. 32 Bit Serial Receiver (57.6 K Baud TTL & CMOS) Parallel Port Relay Interface Circuit Reading Data From The Parallel Port 1 Second Time Base From Crystal Osc. 32.768 KHz Oscillator Using A Common Watch Crystal Digital Electronic Lock Telephone Circuits Use Old Telephones as Intercom Telephone In-Use LED Indicator ...

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