Thursday, September 24, 2009
This is a scheme set 1000watt power amplifier. Currently I do not have a picture to the circuit board, but because the amplifier circuit is quite simple, you can design it yourself PCB easily. Or you can order it at the store PCB audio kit in the center of electronic singosaren oriental, solo.
the assemble cables for DC power supply and output transistors must be large, use size 1.5-3mm for large current passed. The supply used transformer with 20A/45Ct and at least 4x10000uf/80 volt capasitor. this circuit is able to supply power 10000watt therefore the power transistor will be very hot, give good cooling fan on the power transisitor
Skema rangkaian Power amplifier 1000 wattWednesday, September 23, 2009
This power amplifier circuit can result in strengthening the voltage up to 27dB for each channel. Strengthening the voltage can be changed by changing the feedback resistor R5 (in this circuit uses R 22K). But the tension reinforcement shall not be less than 20 dB because it can cause oscillation.
IC LM1875 delivers 20 watts into a 4 Ohm or 8 Ohm load on ±25V supplies. Using an 8 Ohm load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown.
IC LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or greater.
Pin configuration of the LM 1785 can be seen in the image below:
As for the circuit's power supply it can you see in the image below:
Monday, September 14, 2009
So the gain is the result of the power output (Pout) and power at the input to its function in the form of frequency. The size of the gain, (G) is usually the Decibel (dB).
Features IC STK4050II
Compact package for thin-type audio sets
Member of pin-compatible series with outputs of 20 to 200W
Easy heatsink design to disperse heat generated in thintype
stereo sets
Constant-current circuit to reduce supply switch-on and
switch-off shock noise
External supply switch-on and switch-off shock noise
muting, load short-circuit protection, thermal shutdown
and other circuits can be tailored-designed
Application Circuit Power Amplifier IC STK4050 II
Note:
To use the results of the max capacitor 10000Uf/80 Vot, with a pure tranformator 5 / 42 volt
provide a good cooling plate, the ic STK4050 II
Sunday, September 13, 2009
Rangkaian Amplifier Hifi 12 watt Stereo
For asymmetrical power supplies (with the load short-circuited), the maximum unloaded supply voltage is limited to VP = 28 V and with an internal supply resistance of RS ³ 4 W, the maximum unloaded supply voltage is limited to 32 V (with the load short-circuited). For symmetrical power supplies the circuit is short-circuit-proof up to VP = ±21 V.
The TDA2616 is a stereo power amplifier IC comes in a 9-lead single-in-line (SIL9) plastic power package (SOT131). This IC is specially designed for mains fed amplifier circuits, such as stereo radio,tape and television .The IC has good gain balance of both channels and Hi-fi in accordance with IEC 268 and DIN 45500 standards.Also the IC TDA 2616 has special inbuilt circuit for the suppression of noise signals at the inputs, during switch-on and switch-off.This prevents click sounds during power on and power off.
IC TDA 2616 Pin assignment & layout.
IC TDA1516
The TDA1516BQ contains two identical amplifiers with differential input stages. This device can be used for stereo or bridge applications. The gain of each amplifier is fixed at 20 dB. A special feature of this device is the mute/stand-by switch which has the following features:
· low stand-by current (< onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_HVys8w-tJac/Sq1ExFNHDqI/AAAAAAAAAYM/IF-LSOlMn0U/s1600-h/IC+TDA1516.bmp">
Pin IC TDA1516
1 -INV1 non-inverting input 1 8 BS2 bootstrap 2
2 INV inverting input 9 OUT2 output 2
3 GND1 ground (signal) 10 VP supply voltage
4 Vref reference voltage 11 M/SS mute/stand-by switch
5 OUT1 output 1 12 RR supply voltage ripple rejection
6 BS1 bootstrap 1 13 -INV2 non-inverting input 2
Monday, September 7, 2009
TDA4935 is bipolar stereo amplifier IC that can be wired as a 2X15W stereo amplifier or a 30W mono BTL amplifier. The IC also features built in circuitry for over load protection and over temperature shut down. Here the IC is wired in stereo mode in order to deliver 15W power on each speaker. The circuit does not require a dual power supply and it can be powered from anything between 8 to 24V.Here I am using 24V for getting maximum output power.
The circuit can be powered from anything between 8 to24V.
Use 20W, 4 Ohm speakers for K1 and K2.
All electrolytic capacitors must be rated at least 25V.
