Component Values on Amp Keying Protective Circuit
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Posted Saturday, January 15, 2011 2:00 PM
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Maybe this is a dumb question, but looking at manual I got with my SDR1000 I can find no part numbers nor any component values on the circuit shown to protect the unit between SDR1000 and Amp.  Anyone know, for example, what diode to use?
Post #3741
Posted Saturday, January 15, 2011 2:38 PM


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Look in the SDR-1000 Operating Manual, Page 9

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Tim - W4TME
Post #3744
Posted Saturday, January 15, 2011 4:08 PM
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Looking at page 9, in the manual I was supplied there is NO component part number, ratings, or values.   I guess I can guess based upon the supply voltage, etc., but would rather have some certain values to go on.
Post #3747
Posted Saturday, January 15, 2011 8:22 PM


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The diode (D1) can be a 1N4000 or higher PIV.

The relay (K1) is just any old 12 VDC normally open variety.



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Tim - W4TME
Post #3751
Posted Saturday, January 15, 2011 10:25 PM
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Thanks for the info.
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