>
>I notice that Peter Dahl has for sale replacement outboard transformers for
>the SB-220 that produce twice the normal 1A. current. The prices are not
>exactly Coke money. I have a couple of SB-220s and am about to come into
>more parts, including transformers.
>
>Is it feasible to improve of the current capability of the SB-220 power
>supply by connecting two of the standard SB-220 transformers in parallel?
If they have the same number of turns on their windings, yes. However,
there would only be an advantage to increasing the avg. current
capability for RTTY and FM operation. . The stock SB-220 transformer has
12 ohms of secondary R, which is quite satisfactory for SSB operation. .
>Perhaps with an outboard transformer augmenting the inside transformer.
>Would this technique provide a more robust power supply input capability?
>What would the ramifications to the rectifier, filter and other components
>be?
>
Stepstart might be a good idea.
- later, Bob
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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