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Total 4 documents matching your query.

1. LF: Effect of LP-filter om efficiency (score: 1): Author: Dick Rollema <[email protected]>; Date: Tue, 08 Jun 2004 10:06:46 +0200; To All from PA0SE The following subject may have been discussed on the reflector before but I can't remember it. Class D and E final amplifiers have high efficiency because they produce square waves.; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-06/msg00029.html (11,978 bytes)
2. Re: LF: Effect of LP-filter om efficiency (score: 1): Author: [email protected]; Date: Tue, 8 Jun 2004 05:52:54 EDT; In a message dated 08/06/2004 08:22:21 GMT Standard Time, [email protected] writes: So it seems to me that class D and E amplifiers should preferably be followed by a low pass filter with a seri; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-06/msg00031.html (9,571 bytes)
3. Re: LF: Effect of LP-filter om efficiency (score: 1): Author: Richard Rogers <[email protected]>; Date: Wed, 09 Jun 2004 10:51:39 +1000; G'day. Robert, AX2TAR, tried transmitting without a lowpass filter. I live about 15Km from him and could barely hear the 3rd harmonic, but his 19th harmonic at about 3.4MHz was very strong. Presumabl; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-06/msg00036.html (11,712 bytes)
4. LF: Effect of LP-filter om efficiency (score: 1): Author: Dick Rollema <[email protected]>; Date: Thu, 10 Jun 2004 12:05:10 +0200; To All from PA0SE Many thanks to all who gave their views on the effect of lowpass filters following 136 kHz power amplifiers. I find the Reflector a wonderful medium for exchanging interesting info; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-06/msg00054.html (8,791 bytes)

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