Make a pocket merit using 8550 and 8050 ----- Simple Amplifier

Keywords: discrete component power discharge circuit diagram As shown in the figure, the base operating voltage of the input pole (9014) is equal to the midpoint voltage of the two output pole triodes, typically half of the power supply voltage, and the voltage is stabilized by the base of the base of the output triode. . 3.3 ohmic resistance is connected to the emitter of the output triode to stabilize the bias. To reduce the effects of ambient temperature, different devices (such as diode, output triode) parameters on circuitry. When the bias flow increases, the output triode emitter and the base voltage are reduced to reduce the bias. This circuit input impedance is 500 ohms, and when using 8 ohm speakers, the voltage gain is 5. When the circuit does not disturb the output 50mW power, there are about 2V voltage swing on the speaker. Increasing the power supply voltage can increase the output power, but at this time, attention should be paid to the output transistor heat dissipation problem. At the 9V supply voltage, the circuit consumes about 30 mA. Pay attention to the two output power tubes in the production should be close. Other device parameters can be made with reference to the selection. This circuit is suitable for making a headphone amplifier or other small power amplifier.

Our other product:

Professional lightning protection system for Tower	Professional FM Radio Station Equipment Package	FMUSER FU-1000C 1000W FM Transmitter With USB Audio Input Interface
FMUSER 200W FM Radio Broadcasting Package	Hotel IPTV Solution	FMUSER FSN-1000T V5.0 1KW FM Radio Broadcast Transmitter