BA5417 Stereo Amplifier

Stereo Amplifier circuit schematic drawings along with the components and how to make it Stereo Amplifier circuit. This circuit uses IC BA5417 as a main component with an output of 5 Watts. BA5417 is a stereo amplifier IC with a lot of good features like thermal shut down, standby function, soft clipping, wide operating voltage range etc.

4 Channel Amplifier circuit

4 Channel Amplifier circuit. 4 channel amplifier uses an IC TDA7375A and capable of producing 18 watts of output power for each chanelnya. If the first amplifier assembly whose name is most simple class amplifier products. Its enthusiasts are people who can not afford to buy branded amplifier / amplifier manufacturer. But now things get a little blurry, because its performance amplifier assemblies contemporary luxury-luxury. Even the upscale audiophile who fell down too much to go make a homemade amplifier.

FM Radio Receiver

The circuit schematic drawings FM Radio Receiver and its components and how to make it FM radio receiver circuit is composed of simple components are widely available in the market. However the output of a simple FM radio receiver circuit is quite satisfactory. The central component of this series just a FET transistor that is widely available in the market. IC LM386 in the circuit above is used as an amplifier output signal, while VC1 is a Varco (Variable condensator) that serves as the tuning frequency. If you do not want to use IC LM386 as an amplifier output, the FM receiver circuit is possible to use your own amplifier, you can make a separate amplifier by connecting the input with the output from the foot of C6.

LED Active Low and High

Picture to the left is a circuit of LED Active-Low, and the picture on the right are active-High LEDs circuit. Consisting of a resistor network that diseri with an LED. 

Auto Switch with Relay

Relay is operated by an electric switch. The current flowing through the relay coil creates a magnetic field that pulled the lever and change the switch contacts. Coil current can be on or off so relays have two switch positions, and most have double throw (changeover) switch contacts as shown in the diagram. 

Simple Flas Ligth LED

For those of who like to automotive, the flash as one of accessoris certainly is not a goods that are foreign. However lanpu yagn lit with LED flash is very bright and blue could be an alternative to the real flash. 

Pre-Amp Circuit

Front of the amplifier is done by the Op-Amp A1, this is the amplifier A1 is actually a time, with the intention of utilizing the high input impedance, about the size of 1M, from one specification data suggest op-amp for use with high-frequency dynamics, the input impedance is too large will degrade its stability, therefore the potentiometer (Pot1) of 47k is used to ensure impedasi input circuit, an audio standard value (real 50k), if the reader wants an application with a larger input impedance, use the value of Pot1 higher, it is recommended to not exceed 220K. Pot1 is also acting as a regulator of the audio volume level.