Scheda di espansione video per console di gioco FC Uscita AV+RF DC-DC step-down

Adopt DC DC step-down, add LC filtering, very small ripple, very small heat, power supply 9~18 volts, regardless of positive or negative;

RF output uses a dedicated IC, no adjustable components, stable operation, clear image, two channels can be selected by setting jumpers;

After many revisions, this version has become perfect;

The power sw on the board can be connected to a self-locking switch to control the power supply of the whole machine. If there is a switch on the motherboard, short-circuit the Power sw, otherwise it will not be powered;

The R21 zero-ohm resistor on the board can be unsoldered to the R2 position to achieve two-way audio output, and the other output is from the RF socket. Although it is connected in parallel, it is better than one speaker, but this is equivalent to giving up the TV function;