Tag Archive: A1015

A 40 watt fluorescent tube lamp or two 20-watt tubes in series will be driven by this circuit but this circuit will produce less brightness than usual, since this circuit only deliver 6-12 Watts. This circuit draws 0.9-1.2 Amps for 2 x 20 watt tubes, or 0.45-0.9A for 1 x 20 watt tube, depending on the potentiometer setting. Here is the schematic diagram of the circuit:

The transformer is wound on a ferrite rod 10mm diameter and 8cm long. The diameter of the wire is fairly critical but has been successfully implemented using 0.28mm wire for all the windings in the prototype. When the circuit is operating, do not remove the tube as the spikes produced by the transformer will damage the transistor.

ICL7107 CD4017 2N3055 LM3914 IRF3205 PT4115 2N2222A
NRF24L01 A1015 DS18B20 ICL7107 NE5532 MC34063 ULN2003

Typically audio amplifier stereo amplifier to a two amplifier. And if a mono amplifier is a single speaker. However this circuit command be present extended to the mono two loudspeaker.But not a equivalence or else serialization access.This makes it needless impedance of the speaker has altered.But will remain to utilize the spokeswoman as a replacement for of the resistance – Collection Peter (RC) of the transistor.The circuit can be alive prolonged to 2 loudspeaker itself. A1015

What time raising the power supply circuit and the audio to input. the audio sign coupling to through the C1 and R1 to increase with the Q1.Which Q1 serves like the Regional Pre amp amplifier to power up to a one point.already conveyance it to Q2.Which Q2 is connected to emitter follower circuit.be active as a driver amplifier intimate section from the pre amp section provides added power to drive the Q3 perform. and Q3 motivation provide while a Regional Power amp amplifier output to the spokeswoman.The opinion of the audio intimate through the VR1 and R2 to enter the pin B of Q2.To control the stability of working instead of well brought-up.This circuit is an output of 40 milliwatts watts of distortion of the gesture rate is by the side of 0.1 percent.And frequency response from 15 Hz – 200 kHz.


Circuit of power amplifiers with power output of 450 watts mono , amplifiers are also frequently used in the amplifier a high-power amplifier, which used in an event, in the field and the placed closed. Because this amplifier suitable for the woofer, fullrange speaker, and can also be fixed for the subwoofer speaker. To further strengthen and maximize the amplifier ,its power supply circuit also must be accurate, for electrolytic capacitors in power supply ,voltage capacitors use 80V or more, and a capcity 20000uF upwards, so when the bass amplifier is high , the voltage is not lot of experience dropping. Diode bridge use a minimum of 35A, or adjust the current input voltage. If the power supply has fulfilled the desire, the supply to the power amplifier.


In the buffer circuit uses PNP transistor A1266 / A564 / A733 /A1015 / A798 and NPN with MJE340.To the driver circuit using PNP transistor MJE350 and MJE350. For the final amplifier circuit use two set 2SC2922 and 2SA1216. Use a quality sanken transistor to maximize quality sound output.