Rongge

This Circut based on IC TDA7231 , Minimum voltage require 2 Volts and maximum voltage 15 volts . I recomended voltage is 12 volt DC. Power output 1,6 Watt with 4 Ohm impedance. See audio amplifier with IC TDA7231 below :

In building QRP HF radios, having an RF signal level amplifier building block is handy. You want 50 Ohm output impedance, some reasonable gain, supply voltage of the usual 10-14V and ease of building using standard parts from your parts bin. Some searching around the interwebs came up with a good idea for circuit from Aaron Parks, KC8FQD, who did a YouTube video on a WWV receiver. [ ]

Components of the above is one component of ic which is applied as a reinforcement. Power amplifier used in an audio signal in order to become more powerful and can be heard via a tool that is the speaker. But in each set must have a voice amplifier, voltage, power quality is different. For the IC has the output power above 2 X 40 Watt with 8 Ohm output impedance. Supply voltage ranging from 18 Volt to 32 Volt. Part List Resistor R1_____1K R2_____1K R3_____22K R4_____22K R5_____1K2 R6_____100K R7_____560R R8_____1K R9_____1K R10____470R R11____4R7 R12____3K3 R13____3K3 R14____4R7 R15____470R R16____100R R17____100K R18____1K2 Capacitor C1_____470pF C2_____470pF C3_____4u7F C4_____4u7F C5_____82pF C6_____82pF C7_____47uF C8_____100uF C9_____10nF C10____39pF C11____100nF C12____47uF C13____47uF C14____100nF C15____39pF C16____10nF C17____100uF C18____47uF Intregated Circuit U1_____STK4773 , STK4793 , STK4803 , STK4813 , 4833 , 4843 , 4853 , 4863 , 4873 , 4893 , 4913. On every IC that I m...

Overview: The AN7510/7520 series is a 0.5W to 3W BTL audio power amplifier IC. Equipped with a standby function and mute or DC  volume circuit, the series includes a lineup of single and dual output models. With simplified set design due to minimum  external components, this IC has a wide variety of applications. Features: Operating power sourcs voltage: 3.0V to 13.5V. Built-in standby function. Built-in mute or DC volume circuit. Circuit Diagram:  0.5W to 3W BTL audio power amplifier IC

This circuit use IC TDA1016 , minimum require voltage for this circuit 3 volt and maximum require voltage 15 volt .Its mono 5 Watt power output with impedance 4 Ohm , Current required 14 mA. In order for this circuit work optimally , the voltage should be at least 9 volts and the speakers should be higher 4 Ohm or equivalent, and use the speaker woofer. See Amplifier circuit schematic below :

Headphone amplifier circuit with op amp ic OPA134, 2134, NE5532, 5534. Headphone amplifier circuit with op amp

The above is a simple amplifier circuit also has a minimal power output. By using only a few components and a single IC as the basis for the strengthening of the amplifier, this circuit has a power output of not more than 2.5 W and impedance or RL 8. Requires a minimum voltage of this amplifier is around 6V and 26V maximum voltage, the voltage must be DC or already rectified and filtered. Part List : R1 = 1R C1 = 0.1uF C2 = 100uF C3 = 0.1uF C4 = 5uF C5 = 500uF C6 = 0.1uF IC = ULN2280B , ULN2281B , ULN3784B.

These amplifiers using IC KA2202 and KA2207, which has a power output of 2.3 Watt berimpedansi 4 ohms. Minimum supply voltage and maximum 5Volt 20Volt. See schematics and component list below. Part List  R1 = 100K R2 = 56R R3 = 56R R4 = 1R Use 1/4 Watt resistor C1 = 100uF C2 = 100uF C4 = 100uF C5 = 470uF C6 = 100nF C7 = 470pF C8 = 2,2nF C9 = 100uF U1 = KA2202 , KA2207