Matt circuit

This is a circuit that can produce 6 million gain. As well as detecting general electric noise, this circuit can be used to detect “mains hum,” the presence of your hand without any direct contact, and detect static electricity. Here is the schematic diagram of the circuit: The mains cable can be located by this circuit by moving it across any wall. The gain is achieved from 200 x 200 x 200. Since the circuit detects very weak electric field, it might look like ghost detector because electric field has weird pattern sometimes.

This is an adjustable / variable power supply which have adjustable output voltage from 6-12 DC volt. This power supply can be used for general circuit or gadget which require 6 – 12DC voltage to work. Component Parts List: T1 = primary 115[220]/secondary 8 VAC transformer. Center Tap not needed. Q1 = 2N1613, NTE128, or substitute. (TO-39 case) On coolrib! BR1 = 40V, 4A. (Check max current of your mini-drill and add 2A) R1 = 470 ohm, 5% R2 = 1K, 5% P1 = potentiometer, 10K C1 = 1000uF, 25V Notes: C1 filters the noise and spikes off the AC. If you find the circuit output too noisy add another electrolytic capacitor over the output terminals. Value can be between 10 and 100uF/25V. The output voltage is variable with the 10K-potentiometer. The transformer input voltage refer to your home power source. Mount the transistor on heatsink / cooling rib to prevent overheating. Read more http://circuitdiagram.net/6-12v-variable-regulated-power-supply.html

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This time I will post about the audio amplifier based on IC KA2204. In an audio amplifier circuit has a power output that can also be referred to as a low-grade resources that have only 6 Watts output with 4 Ohm impedance. Frequency response 30 Hz to 18 kHz . For the scheme can be seen below. Supply voltage and a maximum of at least 6 Volt to 18 Volt Part List R1 =  56R C1 = 1uF C2 = 220uF C3 = 100uF C4 = 47uF C5 = 1000uF C6 = 100nF C7 = 470pF C8 = 22pF C9 = 47uF C10 = 47pF

As is known, released this year the iPhone and iPhone 6 6 Plus equipped with 4.7-inch and 5.5-inch touch screen, respectively. We now know that next year, Apple may return to the production of more compact devices with display only 4 inches. According to Chinese sources, this model will be released in the second half of 2015 under the name of probable iPhone 6 Mini. The source also said that such a small by modern standards, screen, nevertheless has its advantages and may be popular among some categories of users. Thus, it is convenient to operate with one hand, moreover, such a device could easily approach women and enjoy them more devices with screens of 5 inches. The more so that next year the release of iPhone 5C will stop and be able to replace it iPhone 6 Mini.Pravda until these informal data and can be considered only as a rumor.

Below its a converter circuit voltage from 6 Volt to 12 Volt DC. 6 Volt to 12 Volt DC Part List : R1, R4 2 .2K 1/4W Resistor R2, R3 4.7K 1/4W Resistor R5 1K 1/4W Resistor R6 1.5K 1/4W Resistor R7 33K 1/4W Resistor R8 10K 1/4W Resistor C1,C2 0.1uF Ceramic Disc Capacitor C3 470uF 25V Electrolytic Capcitor D1 1N914 Diode D2 1N4004 Diode D3 12V 400mW Zener Diode Q1, Q2, Q4 BC547 NPN Transistor Q3 BD679 NPN Transistor L1 See Notes Notes 1. L1 is a custom inductor wound with about 80 turns of 0.5mm magnet wire around a toroidal core with a 40mm outside diameter. 2. Different values of D3 can be used to get different output voltages from about 0.6V to around 30V. Note that at higher voltages the circuit might not perform as well and may not produce as much current. You may also need to use a larger C3 for higher voltages and/or higher currents. 3. You can use a larger value for C3 to provide better filtering. 4. The circuit will require about 2A from the 6V supply to provide the full 800mA at...

Basiccally,this amplifier works with the IC, which is where ic is associated with several other components in the supply and use DC voltage, which corresponds to the needs of IC above course on the circuit schematic. For IC , stands intregated circuit used is ic LM379 which has a maximum 6 Watt stereo output. This IC manufactered by NS and with SDIP-14 package. While other components needed in the circuit schematic , you can see components of the list below. Component List : Resistor R1___________________2K R2___________________2K R3___________________33K R4___________________33K R5___________________1M R6___________________1M R7___________________10R 2W R8___________________10R 2W Capacitor C1___________________4.7uF C2___________________4.7uF C3___________________470uF C4___________________470uF C5___________________470uF C6___________________100n C7___________________100n IC IC1___________________LM379