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| Subject: | Re: LF: Iron dust toroids and heating/H bridge |
| From: | DK7FC <[email protected]> |
| Date: | Mon, 29 May 2017 11:18:19 +0200 |
| In-reply-to: | <C07C8236090045D29B5F672A744F81BE@AGB> |
| References: | <[email protected]> <[email protected]> <[email protected]> <[email protected]> <C07C8236090045D29B5F672A744F81BE@AGB> |
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Hello G, Am 26.05.2017 23:21, schrieb Graham: The H bridge seems a interesting design, one point , the amp is on frequency , F in = F out ? Yes, there is no divider stage in this design. 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.Composite driver IC's are available for the H configuration, Have you looked at these ? ?, would seem to simplify construction , to a single out put transformer , whilst producing less harmonic power ... ?A single housing will concentrate the dissipated power on one spot which is a disadvantage. I prefer the normal TO-247 components... 73, Stefan Tnx -G, G0NBD |
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