Power Amplifier

Op-Amp's right, not wrong title. I know the op amp is approximately 20 years ago, at age 741/301 series, an easy calculation (gain calculation), affordability, and simplicity of construction makes a very interesting op-amp. So many of the implementation of the op-amp, and even had time to try to build the "op-amp based computer". Almost all can be built with op-amp, except for RF. But that first, reversing the progress of semiconductor technology this condition, a few years back the manufacturers have managed to build an op-amp with a working frequency up to GHz. An article from Texas Instrument by Bruce Carter describes the application of op-amp (THS3202) on the rf circuit. 20dB RF gain op-amp Above circuit provides flat gain of 20dB in the range up to 200MHz.Terminasi input and output impedance is determined by the resistor 49.9Ohm. Strengthening the voltage is determined by resistor 301 Ohm / 5.16 Ohm. Choice of reinforcement could be done as to determi...

Toggle switch in this article is a series of toggle switches that are controlled by infrared light. The series toggle switch is made from a combination of data flip-flop CD4013 2 units. Receiver circuit of the infrared light signals arranged with infrared receiver as found on television remote receiver. Infrared signal from remote is used as clock signals and data to the data flip-flop first. then the second flip-flop data set as a toggle flip-flop toggle the output signal is used to drive the relay. for more details can be seen in thethe following image . Series Toggle Switch With Infra Red (IR) that is required to supply voltage range of 12VDC and the output of Toggle Switch With Infra Red (IR) is dapt used to turn on the lights or other electronic devices with DC or AC voltage source. Series Toggle Switch With Infra Red (IR) was isolated from the load that is placed for use as the final relay. source [ link ] 

Radio communication transceiver is a radio transmitter at the same time the plane doubles as a radio receiver used for communication purposes. It consists of the transmitter and the receiver are assembled in an integrated way. In mulamula generation, the transmitter or receiver or transmitter and receiver sections are assembled separately and is part of a stand sendirisendiri and can work well sendirisendiri Currently employed both parts are integrated in turn. Aircraft simple transmitter consists of an oscillator generating radio vibration and this vibration after vibration boarded with our voice, in a technique called dimodulir radio, then by the antenna is converted into radio waves and transmitted. As we know that the sound waves we can not reach long distances, although its power is quite large, while the radio waves with a relatively small force can reach a distance of thousands of kilometers. In order for our voice can reach a far distance, then our voice superimposed on radio w...

Here , I will give a circuit of schemes that are used to combine 2 pieces input or stereo to 1 input mono. Why 2 inputs in to one because, if we need a stereo amplifier we want to become a stronger by combining the two input into one input, so that a higher power output. Actually without any circuit above we can combine stereo amplifier into mono, but the sound output less than the maximum , need for this additional combiner circuit. Part List = R1______150K R2______920R R3______150K R4______920R R5______920R U1______NE5532 For balance _: R1 / R2=R3 / R4 For balance _: R1 = R3 Gain ______: R5 / R1 = R5 / R3

Variable gain above is a circuit that is used to increase signal strength in dB , needed in a circuit of gains if the range is less reinforcement amplifier input signal, and the required input signal must be high enough so that the circuit is less then the maximum amplifier sound output. For the use of gain can be placed and connected directly to the input amplifier. Part List : R1___15K R2___4K7 R3___15K R4___4K7 R5___180R R6___2K RV1__10K Trim U1___NE5532

Low noise balanced input is can also call for the circuit schematic above , because it has a very small noise output and balanced on each input . The noise output is only  117.0 dBu, its very small maybe even not at all out noise. The schematic based on IC5532 , to maintain ic remain good and avoid damage, you should install heatsink in every IC. If the circuit is finished and ready to use, then connect circuit in final befor going out to other components . Because this circuit is also suitable as a buffer amplifier.

Subsonic and ultrasonic filters can be combined into a single circuit for more stable and orderly bandwith. This good and qualified for only two frequencies with the rotation of widely separate. Circuit schematic above shows the rotation of the scond-order or high-pass Butterworth filter in combination with secon-order low-pass filter. Part List : R1___1K R2___1K R3___12K R4___24K C1___4n4 C2___2n2 C3___470nF C4___470nF IC___IC op-amp For the capacitor , use the ceramic capacitors .

This is mono circuit tone control , include adjusting bass , trebel , and master volume. Minimum voltage require 15 volt and maximum voltage 45 volts.See schematic and construction below :

This circuit is used for controlling the volume of output  and then entered the mixer, but this circuit not only as the volume setting. This circuit also serves to reduce noise , and increase the gain  at the signal coming from the output. See schematic , PCB line ,and construction below   Master mixer circuit Looked Down Looked Up

This circuit use to raise the gain to reduce noise or amplify the signal. And this circuit use IC OP27 / OP37 , this is precision opertional amplifier ,lower noise , and higher speed with the  same input ofset with drift specifications as the OP07 . Both parts have a 10 uV offset , 0.2 uV drift , and 1.8 million gain. Coupled with low voltage noise of 3.5 nV  at 10 Hz and a low 1 /f noise corner frequency of 2.7 Hz, the  OP27 / OP37 are optimized for accurate amplification of low - level signal.  See schematic and pin configuration below : Click to view Larger Output swing about 10 V into 600 Ohm. Input voltage maximum 25 V. This circuit also can use to , Low noise DC amplifiers , Microphone Amplifiers , Precision Amplifier , Tape - Head  Preamplifiers , Termocouple Amplfiers , Low - level Signal Processing , Medical instrumentation m Strain - gauge Amplifiers , High accuracy Data Acquistion.