The invention discloses an implementation method of low-
voltage output loop for
plasma TV power supply and the circuit thereof. The circuit thereof includes a main
transformer (T1), a first commutation
diode (D1), a second commutation
diode (D2), a third commutation
diode (D3), a fourth commutation diode (D4), a fifth commutation diode (D5), a sixth commutation diode (D6), and at least one
autotransformer (T2); wherein the primary side of the main
transformer (T1) is connected with the output of a
resonance circuit, the C end of the
secondary side is connected with the
anode of the first commutation diode (D1), the D end is connected with the
anode of the second commutation diode (D2), the F end is connected with the
anode of the third commutation diode (D3), the G end is connected with the anode of the fourth commutation diode (D4), and the E end is earthed. The invention solves the problem of insufficient
transformer base pins due to too many output lines, and furthermore the transformer
secondary side has the advantages of convenience for adjusting the turn ratio, low cost and high implementation efficiency.