Q-BAIHE 20 W Full DC pura classe A amplificatore Boards
Using original new MJ15024, MJ15025.
Electrolytic capacitor signal main circuit using Taiwan famous brand, The main filter capacitor using audio special electrolytic capacitors.
Capacitance capacity 2 × 470UF / 100V, to ensure a steady stream of power support.
PCB is 1.6mm thick double-sided plate, 2.0 oz copper thickness, spray the whole process of tin, to ensure the current passing well through.
Electrolytic capacitor signal main circuit using Taiwan famous brand, The main filter capacitor using audio special electrolytic capacitors.
Capacitance capacity 2 × 470UF / 100V, to ensure a steady stream of power support.
PCB is 1.6mm thick double-sided plate, 2.0 oz copper thickness, spray the whole process of tin, to ensure the current passing well through.
Note:
In order to reduce the hassle of installing the heat sink, the board adopts the CNC machining center carved radiator aluminum plate, but also need to be connected with a large radiator, otherwise it will be burnt because of over heat. There is test point on the board "TEXT", from the white power resistor 0.22ohm to know, if measured TEST point is 22MV, the quiescent current is 100MA X2 = 200MA, X2 is because the tube in parallel. if measured at 130MV, the quiescent current is close to 1A. Clockwise quiescent current decreases, anti-clockwise quiescent current increases.
Basic parameters:
Supply voltage: DC + -25V to + -35V,
Output power: 20W/8ohms, 40W/4ohms, 80W/2ohms
Speaker impedance: 2-8 ohms
PCB size: 181 * 65MM
Package:
1*20W full DC pure class A power amplifier boards
