Wednesday, September 23, 2009
By using IC LM 1875 made by National Semiconductor, we can make a simple Power Amplifer, but it produces a reliable voice.
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.
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.
Skema rangkaian 20 watt power amplifier
IC LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications.
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.
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:
0 Comments:
Subscribe to:
Post Comments (Atom)
