Showing posts with label channel. Show all posts
Showing posts with label channel. Show all posts
Friday, 10 February 2017
3 channel audio mixer
3 channel audio mixer is built using some of the transistor amplifier.
3 channel audio mixer circuit uses voltage 9VDC summber which can supplied from a battery. 3 channel audio mixer circuit is designed special for the purposes of this Public Amplifier.
Because the audio circuit of this mixer is designed specifically for the purpose of a portable mixer for audio public then this series has only a volume control without the tone control. Image series that looks below audio mixer is a series of mono, if you want to make a 3 channel stereo audio mixer it is necessary to make 2 pieces of a series of three channel audio mixer terebut. For more details, a series of three channel audio mixer can be seen in the following image.
3 channel audio mixer circuit uses voltage 9VDC summber which can supplied from a battery. 3 channel audio mixer circuit is designed special for the purposes of this Public Amplifier.
Because the audio circuit of this mixer is designed specifically for the purpose of a portable mixer for audio public then this series has only a volume control without the tone control. Image series that looks below audio mixer is a series of mono, if you want to make a 3 channel stereo audio mixer it is necessary to make 2 pieces of a series of three channel audio mixer terebut. For more details, a series of three channel audio mixer can be seen in the following image.
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| 3 channel audio mixer circuit |
Sign Component Audio Mixer With 3 Chanel Transistor
P1, P2, P3 = 5K
R1, R11, R15 = 180K
R2, R12, R16 = 2M2
R3, R13, R17 = 750R
R4, R14, R18 = 1K
R5 = 15K
R6 = 220R
R7 = 1.5K
R8 = 820R
R9 = 150R
R10 = 100K
C1, C6, C8 = 1μF-63V
C2, C4, C7, C9 = 100μF-25V
C3, C5 = 220μF-25V
Q1, Q4, Q5 = BC550C
Q2 = BC547 should
Q3 = BC557
J1, J2, J3 = 3mm Mono sockets
SW1, 2,3,4 = SPST Toggle
In a series of three channel audio mixer is equipped with a switch on each chanelnya which select the input impedance, when the switch SW1, SW2 and SW3 in the open then the input should come from the output signal with a high level such as VCD, MP3 player, tape, computer and tuner . And at SW1, SW2 and SW3 closed position, the input should come from a weak audio signals such as microphones.
Wednesday, 30 November 2016
47 Watt BTL Audio Power Amplifier 4 channel
General Description:
The TA8273H is 4 ch BTL audio power amplifier for car audio application. This IC can generate more high power: POUTMAX = 47 W as it is included the pure complementary PNP and NPN transistor output stage. It is designed low distortion ratio for 4 ch BTL audio power amplifier, built-in stand-by function, muting function, and diagnosis circuit which can detect output to VCC/GND short, output offset voltage and over voltage input mode. Additionally, the AUX amplifier and various kind of protector for car audio use are built-in.
Circuit Diagram:
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| 47 Watt BTL Audio Power Amplifier 4-channel |
Datasheet for TDA8273: Download
Thursday, 3 November 2016
6 Channel LED Driver with MCP34845
This 6 channel LED driver circuit is designed using MCP34845 ic manufactured by Frescale Semiconductor with integrated power supply . The MCP34845 6 channel LED driver circuit operates from 5 to 21 volts and is specially designed for use in backlighting LCD displays from 10” to 17”+ for devices like: PC Notebooks, Netbooks, Picture Frames, Portable DVD Players , Small Screen Televisions , Industrial Displays, Medical Displays, etc.
6 Channel LED Driver Circuit Diagram:
The MCP34845 LED driver is capable of driving up to 16 LEDs in series in 6 separate strings. PWM dimming is performed by applying a PWM input signal to the PWM pin which modulates the LED channels directly.
Main features of this driver electronic project are : input voltage of 5.0 to 21 V , boost output voltage up to 60 V, 2.0 A integrated boost FET , fixed boost frequency - 600 kHz or 1.2 MHz , OTP, OCP, UVLO fault detection , LED short/open protection , programmable LED current between 3.0 mA and 30 mA.
6 Channel LED Driver Circuit Diagram:
The MCP34845 LED driver is capable of driving up to 16 LEDs in series in 6 separate strings. PWM dimming is performed by applying a PWM input signal to the PWM pin which modulates the LED channels directly.
Main features of this driver electronic project are : input voltage of 5.0 to 21 V , boost output voltage up to 60 V, 2.0 A integrated boost FET , fixed boost frequency - 600 kHz or 1.2 MHz , OTP, OCP, UVLO fault detection , LED short/open protection , programmable LED current between 3.0 mA and 30 mA.
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