Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
dc to dc
Hi
Try this:
https://members.tripod.com/valveaudio/Membuatsendiri.htm#TOP
**broken link removed** ** very good i'm building the 12v dc 2 dc
any questions? email me: [email protected]
P.
Hi
I am looking for schematic/idea how to build an intercom panel for my home telephone switchboard.
i have one free extention as a panel extention.
what i need is, a circuit that upon pressing the call button this circuit "open" the mic and speaker and generate a dtmf tone (like "0")...
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