Rich,
Is hot switching bad?
Len
At 01:06 AM 12/1/97 -0800, you wrote:
>>Hello All,
>>
>>I will be using my TS930s to drive an SB220 I recently purchased and
>>will be receiving in a few days.
>>
>>The TS930s has an the internal relay intended to operate an amps T/R
>>relay. One side of the NO relay contacts is grounded to the TS 930 and
>>the other side is brought out to a DIN connector for the amp.
>>
>>I do not know the SB220's relay drive requirment except that I believe
>>you ground the low side of a relay whose high side is at approx 120
>>volts. Likewise the manual for the TS 930 does not state its relays
>>capabilities nor the capability of the wiring at the Din connector.
>>
>>Assuming all parts and connections are as designed, is the relay, wiring
>>and connector in the TS930 compatable with the TR circuits of the
>>SB220.
>It will switch a 220. However, the relay in the 220 switches slower than
>the 930, so you wind up hotswitching the amplifier. There is a circuit
>in the 1/94 QST that increases the switching speed of the amplifier.
>cheers, Len
>Rich...
>
>R. L. Measures, 805-386-3734, AG6K
>
>
>
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