![]() ![]() ![]() I bought some of these 78604-1C but they fry on 12VAC+ input. This would work in principle but it would bring up the size/weight of the project by at least an order of magnitude which isn't ideal, to say the least.) 1 - 12 VOLT OUTLET PORTABLE LIGHTING TRANSFORMERS-NEMA 4 ENCLOSURE:: 12 Volt or 24 Volt Low Voltage light transformer. (The only 2:1 transformers I can find are huge, built to take 240V to 120V. My problem is that I can't find a 2:1 transformer suitable, but it seems impossible that such a thing doesn't exist. The current idea I'm working with is to power the whole project off a 24VAC wall wart, which will run the 7812/7915 combo fine, and also can step down at 2:1 to 12VAC for the amp. T,, IPf C I & Cs, Buy Qy Home I D C S:AC 12V 24V to DC 5V P C AC DC Buck C, I AC AC5V-AC30V or DC5V-50V, AC, AC n. ![]() Volt 24 Volt 12V-24V LED Light Bulb RV Camper Landscape Light Bulb A19 Low. But connecting them up causes a huge voltage drop, so it seems that this isn't going to work. Watt 12-Volt Multi-Tap Landscape Lighting Transformer with Digital Timer. The amp converts its 12VAC to ☓0VAC internally, and my first thought was to power the amp off a 12VAC wall wart, then tap off the ☓0 on the amp's board and power a 78 off of this (rectified first of course). In parallel, the currents add at the same voltage. In series, the voltages add at the same current. I don't want to power the final product with two wall warts, because that would be fiddly and annoying. However, note that there are two ways to 'wire the outputs together', parallel and series. The board requires +12V/-15V DC and the amp requires 12VAC. These transformers their a secondary voltage being 24V or 12V with the primary voltage taking the main supply by the utility power supplier (240Vac or. I'm working on a project that combines a board from an electric organ with one of those cheap Chinese tube amps. ![]()
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