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TDA2007 Amplifier Circuit ,  this is stereo power amplifier with power output 2 x 12Watts . Minimum voltage require 8 volts and maximum voltage require 26 volts , with DC supply voltage. Impedance output is 8 ohms. See schematic diagram below :

The post explains a 10 km long range transmitter circuit using ordinary components .PCB fabrication also explained. With the increased activity on 2 metres, some who may have contemplated working this band, have possibly been deterred by the cost of a " black box " and the uncertainty of modifying commercial equipment. With this situation in mind, the Author has , designed a simple , easily-built 2m f.m. transmitter, that can be assembled by anyone who can use a soldering iron and small tools whilst possessing a reasonable amount of patience. The completed unit will perform well, being as versatile as the constructor ultimately wishes to make it. An r.f. output of around 1 watts can be expected if the unit is constructed as described but power far in excess of this may be, achieved if the design is regarded as a working basis and the p.a. stage is developed. Construction Procedures for the proposed long range transmitter circuit A simple printed circuit technique is employed...

 "Simple 2.1 Surround Speaker System " . Here I have used  three TDA 2030 IC for making signal amplification . Here you need a sub filter extra ( Sub filter circuit diagram link showing below ) . This project  mostly used in computer  . Part list and applications are showing below. Part List Component No: Value Usage All C1 100MF  Grounding  All C2 100nF Grounding All C3 100nF Grounding All C4 100MF Grounding All C5 100MF Feedback All C6 100MF Audio Coupling  All C7 220nF Noise Grounding  All R1 1K All R2 10K ( Not 1K ) All R3 22K All R4 22K (Not 1K ) All RV1 100K Volume Controlling  All D1 To D2 IN4007 Potential Breaking U1 To U6 TDA2030 Amplification Applications * 2.1 Surround Amplifier * 2.1 Home Theater

Audio crossovers are a class of electronic filter used in audio applications. The circuit above is a schematic of 2-way Cross-over to your sound system, the crossover is a device used to filter and divide the audio frequency between the bass, midrange and treble. It helps in sound quality, eliminating the distortion that occurs when there is a passage of undue frequencies for a particular speaker. Filters 2-way Cross-over to your sound system Circuit Diagram  

This is the Simple 140W amateur radio linear amplifier 2-30Mhz Circuit Diagram. This inexpensive, easy to construct amplifier uses two MRF454 devices. Specified at 80 W power output with 5 W of input drive, 30 MHz, ana 12 Vdc. Simple 140W amateur radio linear amplifier 2-30Mhz Circuit Diagram

The above pictured schematic diagram is just a standard constant current model with a added current limiter, consisting of Q1, R1, and R4. The moment too much current is flowing biases Q1 and drops the output voltage. The output voltage is: 1.2 x (P1+R2+R3)/R3 volt. Current limiting kicks in when the current is about 0.6/R1 amp. For a 6-volt battery which requires fast-charging, the charge voltage is 3 x 2.45 = 7.35 V. (3 cells at 2.45v per cell). So the total value for R2 + P1 is then about 585 ohm. For a 12 V battery the value for R2 + P1 is then about 1290 ohm.  For this power supply to work efficiently, the input voltage has to be a minimum of 3V higher than the output voltage. P1 is a standard trimmer potentiometer of sufficient watt for your application. The LM317 must be cooled on a sufficient (large) coolrib. Q1 (BC140) can be replaced with a NTE128 or the older ECG128 (same company). Except as a charger , this circuit can also be used as a regular power supply . Parts ...

Volt meters & ampere meter with PIC can be used to measure voltage and current simultaneously. The series of volt meters & ampere meter with PIC16F876A PIC is used as a data processor voltage and current are measured.  This circuit uses the viewer in the form of 16 × 2 LCD used for the data display voltage and current measurements. In the article volt meter and ampere meter with PIC are discussed kerannya limited to devices only. More detail can be seen from the image sequence volt meter and ampere meter with PIC below.  The images of Volt Meter & Ampere Meter With PIC Circuit Volt meters & ampere meter with PIC  

The PadFone 2 is not only bigger and faster, it is, combined, lighter than Apple's new iPad, add to that one of the most powerful processors in a smartphone and you're onto a winner. Asus has unveiled the new PadFone 2 smartphone and tablet hybrid in Milan today running Ice Cream Sandwich and sporting a larger 4.7-inch HD display and quad-core S4 processor. The PadFone 2 has had a bump in the screen department going up to a Galaxy S3 rivaling 4.7-inches whilst swapping the original OLED panel for an integrated Super LCD which means brighter, sharper and as we've seen in the iPhone 5, a lot thinner. Under the hood is where things get really impressive however as the PadFone 2 sports Snapdragon's new S4 quad-core processor making it one of the most powerful smartphones on the market. There's 2GB of RAM making sure that no matter what you're doing the PadFone 2 won't even break a sweat. The camera has been given a massive boost now offering up 13MP along with F...

Audio amplifier circuit is very suitable for use at home, using a subwoofer speaker, or woofer speaker. Usually, also called home amplifier, audio amplifiers are based on the IC and ic are used still in series with type STK457 STK and besides it also can use the STK459, 460, 461, 463, 465. And each ic has the quality of each one, please look at alldatasheet.com. Part List : R1 = 22K R2 = 22K R3 = 330R R4 = 33K R5 = 1K R6 = 1K R7 = 4.7R R8 = 3K3 R9 = 3K3 R10 = 4.7R R11 = 100R R12 = 33K R13 = 330R C1 = 0.1uF C2 = 0.1uF C3 = 100uF C4 = 100uF C5 = 0.1uF C6 = 47uF C7 = 47uF C8 = 0.1uF C9 = 100uF C10 = 100uF U1 = STK457,STK459, 460, 461, 463, 465.

Power treatment: 50 watts RMS/75 watts sail through * Voice coil diameter: 1-3/8" * Le: 2.34 mH * Impedance: 8 ohms * DC resistance: 6.7 ohms * Frequency response: 30-4,000 Hz * enticement importance: 15 oz. * Fs: 34 Hz * SPL: 88 dB 1W/1m * Vas: .87 cu. ft. Classic Woofer - Dayton Audio DC160-8 6-1/2

Therefore this architecture represents the simplest access I could booty and still get the adapted outcome.The band akin audio arresting enters the absorber area it is astern out of phase.This is to atone for the filters which will alter the appearance afresh appropriately abiding the arresting to it’s able phase. The filters are more-or-less accepted low and aerial canyon filters appropriately however, added capacitors and resistors accept been added in adjustment to get the altruism bottomward to a minimum appliance alone E12 components. This alive Cantankerous over is adequately beeline forward. It consists of a absorber and two 3rd order, 18 dB per octave filters. One low canyon and the added high. The cantankerous over abundance is set at 2Khz and is advised for AEK’s 400watt per access PA/Keyboard Amp systems. Obviously alone one access is apparent here. This ambit may not be of awfully abundant use to anyone as it was accurately advised to clothing the applications. It is not ca...

 Sony Computer Entertainment Inc . (SCEI) announced that cumulative sell through for the PlayStation 4 ( PS4 ) worldwide has surpassed 2.1 million units as of December 1, 2013. The number includes the 700,000 units sold through in Europe and Australasia launching on November 29. The PS4 system became available on November 15 in the United States and Canada and on November 29 in Europe, Australasia and Latin America and is now available in 32 countries globally. “ PS4 delivered the best launch in PlayStation history with the North American release and we’ve continued this incredibly successful start in Europe, Australasia and Latin America,” said Andrew House, President and Group CEO, Sony Computer Entertainment Inc. “Demand remains incredibly strong and continues to overwhelm the supply worldwide, but we are diligently working to meet those growing demands and to deliver additional PS4 units to our retail partners throughout the holiday season.  We are extremely grateful f...

Components of the above is one component of ic which is applied as a reinforcement. Power amplifier used in an audio signal in order to become more powerful and can be heard via a tool that is the speaker. But in each set must have a voice amplifier, voltage, power quality is different. For the IC has the output power above 2 X 40 Watt with 8 Ohm output impedance. Supply voltage ranging from 18 Volt to 32 Volt. Part List Resistor R1_____1K R2_____1K R3_____22K R4_____22K R5_____1K2 R6_____100K R7_____560R R8_____1K R9_____1K R10____470R R11____4R7 R12____3K3 R13____3K3 R14____4R7 R15____470R R16____100R R17____100K R18____1K2 Capacitor C1_____470pF C2_____470pF C3_____4u7F C4_____4u7F C5_____82pF C6_____82pF C7_____47uF C8_____100uF C9_____10nF C10____39pF C11____100nF C12____47uF C13____47uF C14____100nF C15____39pF C16____10nF C17____100uF C18____47uF Intregated Circuit U1_____STK4773 , STK4793 , STK4803 , STK4813 , 4833 , 4843 , 4853 , 4863 , 4873 , 4893 , 4913. On every IC that I m...

How to Build 1.2-30V/1.5A Variable Regulated Power supply, This is simple 1.2-30V/1.5A variable regulated power supply circuit diagram The 110V-AC coming from the powercord is fed to the transformer TR1 via the on-off switch and the 500mA fuse. The 30vac output (approximately) from the transformer is presented to the BR1, the bridge-rectifier, and here rectified from AC (Alternating Current) to DC (Direct Current). If you don't want to spend the money for a Bridge Rectifier, you can easily use four general purpose 1N4004 diodes. The pulsating DC output is filtered via the 2200µF capacitor (to make it more manageable for the regulator) and fed to 'IN'-put of the adjustable LM317 regulator (IC1). The output of this regulator is your adjustable voltage of 1.2 to 30volts varied via the 'Adj' pin and the 5K potmeter P1. The large value of C1 makes for a good, low ripple output voltage.  1.2-30V/1.5A Variable Regulated Power supply Circuit Diagram Why exactly 1.2V and not...

Free circuit dot com presents the timer circuit with IC 4060 as this circuit is simple to make the project or devices. This timer circuit can  set time at 1 minute to 2 hours. Frist information, Technically, the IC 4060 is a 14-stage ripple carry binary counter, the oscillator and divider of a monolithic integrated circuit, contained in a 16-pin dual-in-line housing with ceramic or plastic. A phase of the integrated oscillator is a key feature of the integrated circuit, which keeps the number of components in the integrated circuit to a minimum at the design frequency generators or oscillators. The phase of the internal oscillator operation easily through a network of resistors and a capacitor connected to the pins #8, #9 and #10. 1 Minute to 2 Hour Timer Circuit Diagram The timer time is determined by P1 and C1, through the following formula (seconds): t = 2.3 * (P1 + 18k) * C1 * 2 ^ 13 . The basic structure of the IC can be understood from the following: According to the rule...

Voltage-To-Frequency Converter Circuit Diagram 2 . Using a Burr-Brown VFC 32 IC, this voltage-to-frequency converter uses few components. The circuit values are shown in the figure. This charge-balanced V/F converter uses a VFC32 or a VFC320 IC.  The positive charge from the 1-mA balances the negative charge from the input. V/F converter waveforms are shown in Fig. 100-l(b).  Voltage-To-Frequency Converter Circuit Diagram 2

These amplifiers using IC KA2202 and KA2207, which has a power output of 2.3 Watt berimpedansi 4 ohms. Minimum supply voltage and maximum 5Volt 20Volt. See schematics and component list below. Part List  R1 = 100K R2 = 56R R3 = 56R R4 = 1R Use 1/4 Watt resistor C1 = 100uF C2 = 100uF C4 = 100uF C5 = 470uF C6 = 100nF C7 = 470pF C8 = 2,2nF C9 = 100uF U1 = KA2202 , KA2207

The room bells are used to produce a ringing alert sound so that the resident comes to know that a visitor is there on the door. Many homes have two doors for entering. So at times it is confusing for the resident to find out on which door is the visitor present. This room bell circuit produces two different sounds can be used simultaneously on both the doors. The room bell circuit is made up of CMOS LSI designed UM3561 IC which consumes less power. It is commonly used in toys and alarm watches because of its low cost. A compact sound module can be constructed using this IC. It includes oscillator and selector circuit and only few components are required to be added externally. It also contains a programmed ROM to produce siren sound. When the switch S1 or S2 is pressed, the pin1 or pin5 of the IC1 receives the high signal which is used to drive the transistor that is connected to pin3 of IC1. Hence the speaker gets the supply and IC1 produces the sound of siren so as to indicate...

This is the Simple 100W inverter 12V to 220VAC Circuit Diagram 2. To lower or raise any specific voltage is better adapted from a transformer, but this component does not operate in direct current, which is available in battery or vehicle. Therefore we must put an oscillator that generates an alternative current. The Integrated circuit (CD4047) is an oscillator that has the output inversely to one another. This means that while if one is high, other states are low and vice versa. The signals are too weak to drive the transformer so that the driver applied consists from three transistors in the chain. Diode in parallel with the end of each transistor prevent reverse current produced by removing the coil current that can burn the transistor. 5A diode placed in parallel with the power line creates a short circuit when the polarity is accidentally reversed, causing the fuse to skip. The 50K preset adjusts the oscillator frequency, which is directly proportional to the frequency of the AC p...