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Audio Amplifier Circuit by STK082

Ditulis oleh : Fauzan A Mahanani pada 15:14

 

Here is a 35W audio amplifier circuit built based on single Amplifier chip STK082. This is a very simple amplifier, very easy to build and produce sound output with a fairly large power of 35 watts into 8 Ohm loads.Skema rangkaian STK082 – 35W audio AmplifierThis amplifier circuit is suitable for home power audio devices. The STK082 amplifier specifications might lead you to believe that it can use supply voltages of up to ±43V. but I don’t recommend anything greater than ±25V if 8 ohm loads are expected, although ±30V will be fine if you can provide good heatsinki…

3V FM Transmitter

Ditulis oleh : Fauzan A Mahanani pada 07:04

This 3V FM transmitter is about the simplest and most basic transmitter to build and have a useful transmitting range. It is surprisingly powerful despite its small component count and 3V operating voltage. It will easily penetrate over three floors of an apartment building and go over 300 meters in the open air.The circuit is basically a radio frequency (RF) oscillator that operates around 100 MHz. Audio picked up andamplified by the electret microphone is fed into the audio amplifier stage built around the first transistor. Output from the collector is fed into the base of the second transistor where it modulates the resonant frequency of the…

DC Motor Controller Circuit Using 741 Op-Amp

Ditulis oleh : Fauzan A Mahanani pada 07:28

This DC motor controller circuit using a 741 operational amplifier operating as a voltage follower where its non inverting input is connected to the speed and rotation direction of a potentiometer VR1. When VR1 is at mid position, the op-amp output is near zero and both Q1 and Q2 is OFF.When VR1 is turned towards the positive supply side, the output will go positive voltage and Q1 will supply the current to the motor and Q2 will be OFF. When VR1 is turned to the negative supply side, the op-amp output switches to the negative voltage and Q1 will turn OFF and Q2 ON which reverses the rotation of the motor’s direction.Skema Rangkaian DC Motor Controller…

Skema Flash Analog to Digital Converters (ADC) ADC 207

Ditulis oleh : Fauzan A Mahanani pada 13:55

Skema Flash Analog to Digital Converters (ADC) ADC 207ADC ADC 207 is the first to use Flash Converting An High Speed ​​VLSI Advandced 1.2 micron CMOS process. The process that is able to do the ADC 207 as mentioned earlier is very great and makes the ADC 207 is unique. The speed of the process of this ADC has a good linearity and have a stable temperature. ADC 207 has a lower power consumption is 250 mW. ADC is working with +5 VDC voltage source and at a frequency of 20 MHz. ADC 207 has a small sampling time is 12nS, thus making the ideal sampling results. ADC 207 has 128 features auto balanced comparators with each conversion that serves to…

Power Supply Simetris Variabel LM317/337

Ditulis oleh : Fauzan A Mahanani pada 19:53

Skema Rangkaian Power Supply Simetris Variabel LM317/337Symmetrical Variable Power Supply LM317/337 is a series of power supply with output symmetrical with tgangan output that can be set (adjustment). Symmetrical Variable Power Supply Rangkiaan LM317/337 uses LM317 variable DC regulator to regulator positive and negative voltage regulator for variable voltage regulator negativenya LM37. Symmetrical Power Supply series LM317/337 Variables can be used to provide the source voltage with maximum current 1A. In the application field can be mounted voltmeters at each point its output to ease in setting the output voltage level circuit Symmetrical…

Solar Tracker With AT89S52

Ditulis oleh : Fauzan A Mahanani pada 19:59

Sensor Cahaya pada Solar tracker With AT89S52Diagram Blok Solar tracker With AT89S52AT89S52 With sun tracker is a tool used to control the direction of the panel Solar Cell for always getting sunlight. AT89S52 With solar tracker uses a light sensor as a light detector. AT89S52 With solar tracker uses dc motors for Solar Cell panels menegendalikan direction. Broadly speaking AT89S52 With Solar tracker may be analogous as a tool to adjust the position of the exposure to the solar cell matahri direction by Ensor sensing light and a DC motor which is controlled using a microcontroller AT89S52.Block Diagram With Solar tracker AT89S52. Pictured above…

Audio Peak Level Indicator By Op-Amp

Ditulis oleh : Fauzan A Mahanani pada 16:45

simple circuit PEAK indicator of foliage of the musical signal. This circuit was designed to provide a valuable test equipment tool for sound reinforcement systems like sound amplifiers and the like. The circuit is formed by an input buffer and ac to dc voltage converter (IC1A) feeding a window comparator (IC2A, IC2B, IC2C) which illuminates one of three LEDs at a time.Skema Rangkaian Audio Peak Level Indicator By Op-AmpNo setup is required: if correct values are used for resistors R3 to R7, LED D1 will illuminate at 0dB input (0.775V RMS), LED D2 at +5dB input (1.378V RMS) and LED D3 at +10dB (2.451V RMS).The circuit was optimized for low current…
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