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| To: | [email protected] |
|---|---|
| Subject: | LF: Re: Sub-9kHz walkabout tests |
| From: | "Dave Sergeant" <[email protected]> |
| Date: | Tue, 11 May 2010 16:58:11 +0100 |
| In-reply-to: | <[email protected]> |
| References: | <[email protected]>, <28093526.109907.1273582377168.JavaMail.fmail@mwmweb078>, <[email protected]> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
On 11 May 2010 at 15:55, Roger Lapthorn wrote: > There are several sources in the UK for toroidal mains transformers with > various step-down ratios. See for example > http://www.airlinktransformers.com/toroidal-transformers.asp . These > sell for £12 to £20 for ratings up to 160VA. They are available up to > at least 1kVA, but get expensive. > Not sure that mains transformers are appropriate for 9kHz. Probably better would be switch mode psu transformers (normally operate 25kHz- 75kHz) and you could probably design what you wanted with readily available cores (toroid and other). 73 Dave G3YMC http://www.davesergeant.com |
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