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Total 7 documents matching your query.

1. LF: Decca Jeep (score: 1): Author: "hamilton mal" <[email protected]>; Date: Fri, 02 Nov 2007 17:56:14 +0100; Hi all I wonder how many old 5501 Decca jeeps are still in use on 136 khz, they are such a big heap, and require odd ball voltages. It is so easy to build a compact custom designed class D/E FET ampl; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00285.html (7,715 bytes)
2. Re: LF: Decca Jeep (score: 1): Author: "Mike Dennison" <[email protected]>; Date: Tue, 05 Apr 2011 19:03:10 +0100; Many thanks to Andy, Warren and Mal for their helpful info. It certainly looks like I have a shorted turn. I will start by trying to dismantle the existing pot core, but I am not optimistic. Warren's; /rsgb_lf_group-archives/html/rsgb_lf_group/2011-04/msg00005.html (10,826 bytes)
3. Re: LF: Decca Jeep (score: 1): Author: Andy Talbot <[email protected]>; Date: Mon, 4 Apr 2011 20:44:58 +0100; Any large modern SMPSU core will cope with 1kW of sinusoidal 137kHz Just make sure B is kept below ~0.1 Tesla using the equation to determine teh minumum number of turns V(rms) = 4.44.F.N.A.B F Hz, N; /rsgb_lf_group-archives/html/rsgb_lf_group/2011-04/msg00141.html (10,948 bytes)
4. Re: LF: Decca Jeep (score: 1): Author: Andy Talbot <[email protected]>; Date: Tue, 5 Apr 2011 19:18:30 +0100; Don't worry about trying to replicate inductance values or even worry about it tahy don't matter, and probably vary all over the place with temperature. High u ferrites aren't reknowned for temp stab; /rsgb_lf_group-archives/html/rsgb_lf_group/2011-04/msg00194.html (13,225 bytes)
5. Re: LF: Decca Jeep (score: 1): Author: "Mike Dennison" <[email protected]>; Date: Tue, 05 Apr 2011 20:20:59 +0100; OK, thanks. M =; /rsgb_lf_group-archives/html/rsgb_lf_group/2011-04/msg00239.html (11,951 bytes)
6. Re: LF: Decca Jeep (score: 1): Author: "mal hamilton" <[email protected]>; Date: Tue, 5 Apr 2011 19:09:47 +0100; Mike The info that I sent yesterday for transformer windings are those specified by Decca for that particular transformer on that core. mal/g3kev Many thanks to Andy, Warren and Mal for their helpful; /rsgb_lf_group-archives/html/rsgb_lf_group/2011-04/msg00262.html (11,146 bytes)
7. LF: Decca Jeep (score: 1): Author: "mal hamilton" <[email protected]>; Date: Mon, 4 Apr 2011 19:29:04 +0100; Output transformer info. Faulty output transformer. Strip old transformer windings and rewind as follows. Prim 3 x 6 turns Sec 31 turns or use large LOPT 3C material with same amount of turns as abov; /rsgb_lf_group-archives/html/rsgb_lf_group/2011-04/msg00648.html (8,750 bytes)

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