millzners
Well-known member
- Joined
- May 7, 2010
- Messages
- 219
I'm adding a switch or switches to my tube pre to change the HT voltage in order to introduce some distortion via starved plate. I found out accidentally that I liked the way the tubes sound under this condition, but I've never been able to find a suitable switch in my inventory of stuff.
Kingston does the same thing I want to do with his Drive 1, and recommends a reed switch relay from digikey: 306-1195-ND http://www.digikey.com/product-detail/en/9104-12-10/306-1195-ND/1154390 which is great, but I don't have 12VDC I can use for the control voltage and I'd rather not add an additional supply rail just for that one thing.
I found these: Carling DK284-73 http://www.mouser.com/ProductDetail/Carling-Technologies/DK284-73/?qs=%2fha2pyFaduhLFihSPIXLvK6XeHtcP7imEE1LdKwPvBYzwukJY%252bgnMg%3d%3d which says 250VDC but I don't think that's nearly enough...
So I thought I'd ask to see if anyone has any suggestions. Obvious a schematic would be helpful, but until I find the schematic for my build but here is Kingston's where SW6 in the power supply is pretty much what I had in mind: http://www.michaelkingston.fi/files/Drive-1_schematic_rev1.9.pdf
Bonus points if you know of a rotary switch that can handle this task.
Kingston does the same thing I want to do with his Drive 1, and recommends a reed switch relay from digikey: 306-1195-ND http://www.digikey.com/product-detail/en/9104-12-10/306-1195-ND/1154390 which is great, but I don't have 12VDC I can use for the control voltage and I'd rather not add an additional supply rail just for that one thing.
I found these: Carling DK284-73 http://www.mouser.com/ProductDetail/Carling-Technologies/DK284-73/?qs=%2fha2pyFaduhLFihSPIXLvK6XeHtcP7imEE1LdKwPvBYzwukJY%252bgnMg%3d%3d which says 250VDC but I don't think that's nearly enough...
So I thought I'd ask to see if anyone has any suggestions. Obvious a schematic would be helpful, but until I find the schematic for my build but here is Kingston's where SW6 in the power supply is pretty much what I had in mind: http://www.michaelkingston.fi/files/Drive-1_schematic_rev1.9.pdf
Bonus points if you know of a rotary switch that can handle this task.