The circuit in Figure 1 can help if you must transfer dc power and audio over a pair of copper wires. One application for such a circuit is a low-cost door-opening system with speech input. The ...

The speaker can be 2 ohm instead of 4 ohm if we use the TIP transistors. TDA 2030 is produced by SGS Ates and is a complete audio amplifier. AB class of the final amplifier cand deliver up to 14W on 4 ...

Power supply design is a broad field, ... [Bradley’s] design also, but unfortunately he doesn’t share the schematic. I suppose he wants to keep his amp one-of-a-kind.

Return the energy to a capacitor or resistor connected across the dc bus between the power supply and amp (see schematic above). This is the most common method used in industrial applications.

Power supply design is a broad field, ... an 18650 battery, charging circuit, a voltage converter, display, adjustment ... Continue reading “Hybrid Lab Power Supply From Broken Audio Amp ...