London Power’s RLY kit is comprised of a miniature 12Vdc mechanical relay on a PCB to make wiring easy.
Mechanical relays provide complete isolation of the control circuitry and the switched circuitry. This makes them ideal for switching high-voltage features such as rectifiers, triode-pentode mode, etc. The relays selected have a life expectancy of up to 10-million cycles.
RLY has two poles, each with normally open and normally closed positions. These represent the contact state when the relay coil is not powered. The contacts can be wired for series or shunt switching, as required for the circuit to be controlled.
Use a single RLY for triode-pentode switching of a complete push-pull output stage. Although a single RLY could switch LP-PRE, it is better to use two RLYs to prevent the risk of oscillation. Similarly, two RLYs should be used to switch D-PRE. RLY can also be used for effects loop bypassing, preamp channel selection, output tube selection, or any other switching requirement.
Power requirement: 12Vdc at 12mA
PCB size: 1″ square, 25mm square
FSW – Push-on/push-off latching foot switch
PSW – Toggle-style panel switch
For more information:
– see our page, About Our Switching Kits
– download our informative PDF: London Power Switching Kits Selection & Application (135 kB, 22 pages)