Deriving relay power in JTM45/50

ivan H · Post by **ivan H** » Wed Oct 17, 2012 1:34 am

Hi all, built JTM50 on Metro JTM45 chassis using 1202-55 PT & 784-139 OT, winged C EL34's, switcable cascading pre, using a 4PDT switch that earths V1A's input in normal mode (Bright Channel only). & also switches a Pre PI Master in when cascaded & completely out in normal mode Sounds great. I want to add 2x DPDT relays. Is it ok 2 derive relay/LED power from the heater supply or should I add a small tranny 4 this. Also need to get up 10 posts to access the parallel loop schematic. All suggestions appreciated. Cheers

ivan H · Post by **ivan H** » Thu Oct 18, 2012 6:00 pm

Ok, I think I found the answer in 1 of these opto's + 1 sister board from skipzcircuitz.com/CHSW.html that I found in the Repairs, Restorations & Mods section. Their small sze will b a plus when installing in the confines of the JTM45 chassis. Cheers

axeman · Post by **axeman** » Thu Oct 18, 2012 10:41 pm

Add a seperate source to power the realy's

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Deriving relay power in JTM45/50

Deriving relay power in JTM45/50

Re: Deriving relay power in JTM45/50

Re: Deriving relay power in JTM45/50