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Re: LF: Iron dust toroids and heating/H bridge

To: <[email protected]>
Subject: Re: LF: Iron dust toroids and heating/H bridge
From: "Graham" <[email protected]>
Date: Mon, 29 May 2017 14:45:22 +0100
Importance: Normal
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More of a power block, that would run on 136/477 with little modification,
just one  out put device and  filter  needed , low harmonic power levels
probably  help ..

with a dedicated driver 'ic' , possible, fet's would have a longer life span, )
may be power level  control as  well ..  the  on frequency aspect is useful

Found a  80 watt  500 Khz   inverter with H ic drive

Or just wind a  transformer ..


From: "DK7FC" <[email protected]>
Sent: Monday, May 29, 2017 2:16 PM
To: <[email protected]>
Subject: Re: LF: Iron dust toroids and heating/H bridge

...i would say it's not worth looking at. But it depends on the attitude. If your goal is to learn about the performance of these highly integrated H bridges, then the result will be positive because you WILL learn, FETs dead or alive, so it would be worth to try. If your goal is to become active on 137 kHz with QRO then i would not bother with them...
73, Stefan

Am 29.05.2017 15:05, schrieb Graham:
Have  you looked at these ? ?,
As far as i know the ones which are cheap and available in small amounts are not suitable for 137 kHz and such power levels.
Tnx Stefan, I see some listed , which appear to be high frequency
etc, but yes as to suitability , cost might be a issue as well ..
worth looking  at  ?

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