Loublet Schematic

This amplifier output circuit having a fairly low at only 2W 8 ohm impedance. Minimum supply voltage is needed 4 volts and a maximum voltage 18V DC. Power amplifier circuit was very low compared with other PA IC series, an average of 30W and over.

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This amplifier output circuit having a fairly low at only 2W 8 ohm impedance. Minimum supply voltage is needed 4 volts and a maximum voltage 18V DC. Power amplifier circuit was very low compared with other PA IC series, an average of 30W and over.

Part List :
R1 =  750K
R2 = 100K
R3 = 1K
R4 = 18K
R5 = 330K
R6 = 82K
R7 = 10K
C1 = 5uF
C2 = 100uF
C3 = 1000pF
C4 = 1000uF
C5 = 0.1uF
C6 = 5uF
U1 = PA246

This schema diagram is very simple, very easy to build and will be great idea for newbie or student project.

The IC TDA7052 is a mono output amplifier coming in a 8-lead DI package (DIP). The device is mainly designed for battery-operated portable audio diagram. The features of TDA 7052 include ,no external components needed, no switch-on or switch-off click sounds, great overall stability, very low power consumption(quiescent current 4mA), low THD, no heatsinks required and short-schema proof.

The gain of TDA 7052 is fixed internally at 40 dB. . To compensate the reduction of output power due to low voltage supply the TDA7052 uses the Bridge-Tied-Load principle
(BTL) which can provide an output of around 1 to 2 W Rms(THD = 10%) into an 8 Ohm load with a power supply of 6 V.

In the schema the potentiometer can be used to control the volume. Capacitor C1 and C2 are meant for filtering the supply voltage if a battery eliminator is used as supply source. For operations using a battery C1 and C2 are no necessary.