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[AMPS] TS930s-SB220 Interface

To: <amps@contesting.com>
Subject: [AMPS] TS930s-SB220 Interface
From: schaier@avotec.com (Len Schaier)
Date: Mon, 01 Dec 1997 07:38:00 -0500
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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