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[AMPS] Bridge vs. Doubler

To: <amps@contesting.com>
Subject: [AMPS] Bridge vs. Doubler
From: measures@vc.net (Rich Measures)
Date: Thu, 6 May 1999 12:03:57 -0700


>
>In message <+58MpKAl5+L3Ew5U@txrx.demon.co.uk>, Steve Thompson
><amps@txrx.demon.co.uk> writes
>>
>
>>PPS I've no axe to grind here - According to Spice using the figures I
>>guessed at, the doubler does not deliver significantly lower ripple and
>>puts everything but the transformer insulation under greater strain.
>
>Now I've woken up properly, I realise that the strain on the insulation
>is just the same...
>
?  agreed, Steve.  As I understand it, the trade-offs are that the FWD 
filter requires twice as much capacitance and the FWB transformer 
typically needs about 1/3 more layers of paper insulation. 
 //  There is a simple circuit for switching a power supply from FWB (for 
RTTY, FM and CW) to FWD (for SSB).    - - see Figure 3 on my Web site.  
-  cheers


Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


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