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General Category >> The Cafe >> A mechanical 12v DC-> 120v AC inverter.
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Message started by 1st2know on 08/05/17 at 14:31:10

Title: A mechanical 12v DC-> 120v AC inverter.
Post by 1st2know on 08/05/17 at 14:31:10

An interesting hack using a relay to buck a 12v DC circuit, then he steps it up with a 1:10 transformer to 120vac.
https://youtu.be/Ik5QXGqzg5M

Probably more of a toy(ca. 3 watts) than a useful inverter, but still interesting. It sort of reminds me of breaker points, but without the distributor cam.

Title: Re: A mechanical 12v DC-> 120v AC inverter.
Post by Papa Bear on 08/05/17 at 18:41:55

Old car radios had vibrators in them to do the same job, step up the voltage for the vacuum tubes.

https://www.youtube.com/watch?v=Fp6PkRTmb8U

Title: Re: A mechanical 12v DC-> 120v AC inverter.
Post by engineer on 08/05/17 at 18:50:11

Clever little device and I never knew about the old automotive radios using a vibrator to interrupt the DC input.