This paper introduces a 10W high-fidelity output transformer produced by Shanghai Changxing Electric Hardware Factory in the 1980s, and makes some changes and adds preamplifier according to the circuit schematic recommended by the manufacturer. Linear combined amplifier. Although only 10W output power, but the sound is rich and moist, as a household, in the 15M2 room, the momentum is magnificent, not inferior.
The circuit principle of this machine is shown in the figure. As can be seen from the figure, the self-generating bias of the power amplifier tube is provided separately for each tube, reducing the stringent requirements for the pairing of the power amplifier tube under amateur conditions. The pre-stage filaments are powered by DC alone, reducing the chance of inductive crossover and improving the signal-to-noise ratio.
Original selection An original: electronic tube selection exposure board 6P6P, 6N8P, are military grade. The resistance is a metal film resistor. The coupling capacitor is made in Germany, WIMAMKP10, and the filter container and decoupling capacitor are branded with Japanese ruby ​​and black diamond. For a better sense of hearing, go to the WIMAMKP10 small container. Although they are all bought from the old stalls, they are suspected of counterfeiting and counterfeiting. The power transformer is a power transformer that removes the old six-lamp radio and supplies power separately. Such a single two-channel structure, its excellent effect is self-evident. In this paper, the scaffolding welding process is used, one point is grounded, and one grounding busbar is used for each of the two channels. The grounding of the RCA seat at the input end is grounded at one point, that is, the RCA seat is not insulated and is in good contact with the casing. The ground wire uses thick bare copper wire. Do not jump from the front to the back of the cable. The wires should be crossed and not parallel. The weak signal should be kept away from the strong signal. The main circuit should be separated from the power circuit. In particular, the front circuit wiring should be more rigorous. Do not insert the tube first, and measure the voltage at each level. Before plugging in the tube, the load should be connected to the output. When you insert the inverter tube, if you hear the howling, it is negative feedback. Then the homemade three-way speaker on the street, the notes are so smooth and natural, a song is so beautiful and intoxicating.
KNBL1-32 Residual Current Circuit Breaker With Over Load Protection
KNBL1-32 TWO FUNCTION : MCB AND RCCB FUNCTIONS
leakage breaker is suitable for the leakage protection of the line of AC 50/60Hz, rated voltage single phase 240V, rated current up to 63A. When there is human electricity shock or if the leakage current of the line exceeds the prescribed value, it will automatically cut off the power within 0.1s to protect human safety and prevent the accident due to the current leakage.
leakage breaker can protect against overload and short-circuit. It can be used to protect the line from being overloaded and short-circuited as wellas infrequent changeover of the line in normal situation. It complies with standard of IEC/EN61009-1 and GB16917.1.
KNBL1-32 Residual Current Circuit Breaker,Residual Current Circuit Breaker with Over Load Protection 1p,Residual Current Circuit Breaker with Over Load Protection 2p
Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.zjaccontactor.com