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Homemade PABX


PABX
 
186 More Best Homemade Tools eBook
TOOL:
PABX
PLANS:
None. For all tools with plans, click here.
BUILDER:
Andrew Holme on aholme.co.uk
DESCRIPTION:
Homemade PABX constructed from a call sensor, opto-triacs, opto-isolators, resistors, transformers, an op-amp, and a tone generator.
RATING:
(1)
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CATEGORIES:
Electronics
TAGS:
electronics
LEVEL OF DETAIL (1-5):
4
URL:
http://www.aholme.co.uk/Exchange/Design.htm


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