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ITEM NAME:100W*2 OCL Two Channel Amplifier Board Module High Power Electronic DIY Kits Home Electronic Component Chips Sensor Arduino Module Raspberry Pi 100W*2 OCL Two Channel Amplifier Board Module High Power Electronic DIY Kits Popular Popular Product Introduction Features: Fully separated components, four high-power triodes, two stereos, each with a power of up to 100W. This power amplifier adopts the typical OCL circuit, which has the advantages of high stability, wide frequency response range and good fidelity. It is often used in high-fidelity sound reproduction equipment. This OCL stereo amplifier is suitable for use by a wide range of electronic enthusiasts and audiophiles. First, the working principle of the circuit As can be seen from the figure below, the output of the speaker and the amplifier is directly coupled, and the output capacitor for DC blocking is omitted. In order to make the DC potential of the output of the circuit zero volt, a positive and negative symmetrical power supply is used, and the differential amplifier input is used. And other measures. In Figure 1, vt i, vt2 are differential amplification input stages, vt3 is the excitation stage, and vt4~vt7 are composite complementary output stages. The audio signal is sent to the base of vt i through the coupling capacitors c 1 and ri. After amplification, it is output from the collector of vt i and sent to vt3 to further increase. The excitation signal of the collector output of vt3 pushes the power output stage vt4~ Vt7 works so that the amplified audio signal can drive the speaker to work. To facilitate further analysis, Figure 1 can be simplified to the form of Figure 2. Vt4 and vt6 are combined to be equivalent to one npn transistor, and vt5 and vt7 are equivalent to one pnp transistor. It can be seen from the vt4, 6 and vt5, 7 of the circuit of Fig. 3 and the power supply filter capacitors c9, c10 that they are equivalent to a bridge. When vt4, 6, vt5, and 7 are identical, c9 and c10 ar.Find many great new & used options and get the best deals for 100W*2 OCL Two Channel Amplifier Board Module High Power Electronic DIY Kits at the best online prices at Order2india Shopping! Free shipping for many products!