This is simple class A MOSFET amplifier 2SK1058 used in the circuit. It is easy to do, you should use a 24V supply volt at high current. using amplifier with Class A tube preamp based on 12AU7. It produces the purest sound. I have no idea of the levels of distortion, but has a very fine and delicate texture quality. With only one watt speaker output should be used efficiently. Lower is better than expected and the stage design of the units of my 12 "base 63L 3-way speakers with ease.
Showing posts with label mosfet. Show all posts
Showing posts with label mosfet. Show all posts
Monday, November 17, 2014
Thursday, October 30, 2014
Mosfet Amplifier 20Watt Output Power
This audio amplifier showed in this circuit diagram , is a very simple and efficiency audio amplifier circuit based on the TDA1308 integrated class-AB stereo headphone . The device is fabricated in a 1 mm Complementary Metal Oxide Semiconductor (CMOS) process and has been primarily developed for portable digital audio applications.
You can use this circuit diagram with TDA1308 or TDA1308A , the difference between the TDA1308 and the TDA1308A is that the TDA1308A can be used at low supply voltages. The maximum output power that can be obtained with this circuit is around 80mwatts. This audio amplifier circuit requires a very low voltage power supply : from 3 to 7 volts for single supply or 1.5 to 3 volts for dual supply , for TDA1308 .
The TDA1308A supports a low voltage input down to 1.2 volts , but the typical power supply required for both circuits is 5 volts for single supply and 2.5 volts for dual supply .
As you can see the circuit requires very few external components and can be configured to work in stereo or mono configuration.
Friday, September 5, 2014
70 Watt MOSFET Audio Amplifier
This amplifierschema will give you about 70W output power at 60v supply.
Please visit this page for detail information and characterization
Thursday, September 4, 2014
TL071 MOSFET Audio Amplifier 1 x 70w
TL071 MOSFET Audio Amplifier general description:
This simple mosfet power audio amplifier circuit, with TL071 and 2 mosfets (IRF9530, IRF530) power amplifiers can deliver up to 45W on 8 ohm. This schematic is based on Siliconix application and is based on variations of voltage on the 2 resistors serial inserted on the voltage supplier of the operational amplifier driver. The mosfet transistors must be mounted on a heatsink at least 1K/W. Amplifier efficiency is 70%, distortions at cut frequency were at most 0.2% at 20Hz on 8 ohm and 10W. With a power supply of +/- 30V the mosfet audio amplifier can deliver 45W on 8 ohm and 70w on 4 ohm. Remember that this audio amplifier is not protected on short circuits so every time you switch on check to see if the speaker is connected.
MOSFET Audio Amplifier Circuit diagram:
