Thursday, January 30, 2014
Most Power Supply for Amplifier
Power supplyAs with most power amplifiers, the ±60 V power supply need not be regulated. Owing to the relatively high power output, the supply needs a fairly large mains transformer and corresponding smoothing capacitors—see circuit diagram below.Note that the supply shown is for a mono amplifier; a stereo outfit needs two supplies. The power [...]
Wednesday, January 29, 2014
Low power switching regulator
This circuit is a simple battery-powered switching regulator provides 5V out from a 9V source with 80% efficiency and 50-mA output capability. When Q1 is oon , its collector voltage rises , forcing current trhough the iinductor. The output voltage rises , causing A1s output to rise . Q1 cutts off and the output drops low enough for A1 to turn Q1. The [...]
Tuesday, January 28, 2014
144 MHz Simple RF Detector Circuit
This simple circuit helps you sniff out RF radiation from your transmitter, improper joints, a broken wire or poor equipment with RF shielding. The tester is designed for the radio band amateur 2 meter (144-146 MHz in Europe). The instrument has a reading of 4-step LED and an audible alarm for high voltage radiation. The RF signal is received [...]
Monday, January 27, 2014
Universal PIC Programmer Circuit
The series of Universal PIC Programmer can be used with software IC-Prog 1:05. Universal PIC programmer circuit is very simple with BC337 transistor 1 fruit, 2 pieces of IC regulators 7805 and 7808 as well as supporting passive components. Universal PIC Programmer series can be supplied with 2 pieces of 9V batteries.For communication with computer [...]
Sunday, January 26, 2014
Power amplifier circuit with IC LM386
IC LM386 is working for the amplifier audio circuit with a low power output , range from 0.325 watts to 2 watts with impedance 8 ohm. In this circuit requires voltage of 12 volts to the maximum work, and maximum current 3 Amp.Components List :R1=33K / 0,25WR2=1K / 0,25WR3=10R / 1WC1=100nC2=0,1uF/35VC3=100uF/16VC4=220uF/35VC5=4,7uF/16VIC1=LM386Connector [...]
Saturday, January 25, 2014
Nicad Battery charger include voltage limiting
Battery Charger>In this my circuit , which is one of a series of simple battery charger , but this circuit to charger the Nicad battery . This circuit included with current and voltage limting . Why use it ?? because with current voltage you can choose voltage to charge a battery , and the limiting voltage use limit voltage if the battery is fully, [...]
Friday, January 24, 2014
Digital Clock Based on Sam Gordon Theory
The circuit was designed to implement the concept of Sam Gordon in making a digital clock with visible components from the viewer of the clock.Sam Clock – a digital clock equipment that is fully parametric or constantly varying with its parameters of function and construction, which has been operational for many years without problems on a 24 hour [...]
Thursday, January 23, 2014
Motorcycle LED Lights Circuit
Motorcycle LED Lights series is so simple that it only uses a few components, but the results are very satisfactory. Power consumption is small enough 6 Volt course is suitable for your motorcycle.The 555 circuit lower than is a flashing bicycle light powered with four C,D or else AA cells (6 volts). Two sets of 20 LEDs yearn for alternately glimmer [...]
Wednesday, January 22, 2014
TBA820 low power audio amplifier
At this time amplifier circuit based on IC KA2201, TBA820M, LM820M, and U820. You can use all ic is the series under the scheme. This amplifier circuit has a very small output power or low at 2W. Required supply voltage from 3 volts to a maximum of 16 volts.Below is a scheme of this power amplifierPart ListR1 = 100KR2 = 120RR3 = 100RC1 = 100nFC2 = [...]
Tuesday, January 21, 2014
15 V output regulated power supply circuit with uA723 and 2N3055
The supply receive from 220 /120/110 Volt AC , then lowered by the transformer . Then receives +20 Volts DC from rectifier / filter section. This applied to pin 11 and 12 of the IC uA723/LM723 , as well as to the collector of the 2N3055 series pass transistor. The output through R1 and R2, providing about 7 V with respect to ground at pin 4. The reference [...]
Monday, January 20, 2014
Solid State Relays Circuit with TIL111
Solid state relays are almost everywhere these days, but they are very expensive. So, your efforts to build their own salary. Especially since it’s only a few parts and circuit simple and straightforward. Solid state relay is not really at all relays. There are no “relay” is available only with electronics, connection works. It works well as a [...]
Sunday, January 19, 2014
Light Activated Relay
This is same circuit as above with the addition of a photo resistor to trigger the flip flop instead of a push button. The bias resistor in series with photo resistor was chosen so that sufficient voltage is present at the base of the 2N3904 to supply current to the circuit in ambient lighting conditions. The circuit should toggle when the photo resistor [...]
Saturday, January 18, 2014
9V FM Transmitter
This fm transmitter circuit is a very simple and require few external components and operates in FM band above 100 MHz.This fm transmitter needs to be powered from a 9 volts battery or from another 9 volts regulated power supply .The tuned coil L1, has two output tapping for the antenna connection, marked "A" and "B".These are both low-level outputs [...]
Friday, January 17, 2014
2800W high power audio amplifier
Mono high power amplifier is actually a powerful 1400 W, but if this hihgh power amplifier circuit is doubled and you want to create stereo, high power amplifier the necessary components and pcb requires two-fold. So if the stereo high power amplifier 2 X 1400W. Schematic Circuit diagram is still less by looking at the circuit that was so below, the [...]
Thursday, January 16, 2014
Mini Portable Guitar Amplifier
This small amplifier was intended to be used in conjunction with an electric guitar to do some low power monitoring, mainly for practice, either via an incorporated small loudspeaker or headphones. The complete circuit, loudspeaker, batteries, input and output jacks can be encased in a small box having the dimensions of a packet of cigarettes, [...]
Wednesday, January 15, 2014
Analog Versatile Circuit MIC 640 Acquisition System
This tour, available in Stainless DIL 8 legs, can measure 4 analog voltage independent between 0 and 5 volts, and send the result of this measure in the form of four characters on a standard asynchronous serial link. Its serial output is directly TTL or CMOS compatible and can be connected to a serial input RS 232 by simply adding a resistor.The [...]
Tuesday, January 14, 2014
Power Supply with regulation
Electronic devices should be powered by direct current supply of DC (direct current) which is stable in order to work properly. The battery or batteries are the source DC power supply is best. However, for applications that require power supplies larger, the source of the battery is not enough.A major source of power supply is alternating [...]
Monday, January 13, 2014
24V DC Powered Beeper with 4 Separate Inputs
24 Volt DC is a very prevalent voltage used fashionable developed settings. This hobby circuit lower was designed to acknowledge four unlike 24v DC alarm input signals, which are followed by used to drive a single low power beeper. The beeper is a magnetic type with its own oscillator/driver. The four diodes form an “or else” gate so one solitary of [...]
Sunday, January 12, 2014
Photo Transistor Detector
All of the circuits on the PCB are configured so with the intention of as the photosensors are dark, the output of the 556 timers want stay peak. The issue delay period of each one 556 timer can be tainted by selecting as it should be combination ideals representing the R7/C2, R8/C3, R9/C4 and R10/C5 pairs.The LM339 input detection voltage levels [...]
Saturday, January 11, 2014
Auto Sound Systems Should be Superior Quality
I for one cant imagine entering into my daily commute without the sound assistance of a good auto sound system. Music in the morning is as necessary for me as oxygen and caffeine. If I live without any of those above my day is already up and running with wrong foot first. Music is a very important part of any given day for someone like me.My wake up [...]
Friday, January 10, 2014
1000Watt Audio Power Amplifier Blazer Circuit
1000Watt Audio Power Amplifier Blazer CircuitThis is a audio power amplifier Blazer circuit provides up to 1000Watt . This fascinating routes several sensible bass and treble alive. Importantly ought to opt for Power offer supply, that has been fairly high voltage category 70Vdc GND -70V 10A is that the current low level.The transistors are 2SC3858 [...]
Thursday, January 9, 2014
Low Power Audio Amplifier Circuit with IC TDA2824S
This is stereo audio amplifier with based on ICTDA2824S , Minimum voltage require 3 volts and maximum voltage 17 volts . Maximum output power 2 X 2 Watt , its low power amplifier. Output impedance 4 ohm. see schematic audio below [...]
Simple 6V charger battery circuit
This is very simple charger 9V - 30V battery charger with main operation by IC LM317L and 2N222 transistor. Direct input DC voltage , the recomended capacitor is 1000uf. It can be filtering Output voltage and make long-lasting battery. And easy to make this circuit , without using the PCB would be able to.See the Charger Schematic and troubleshooting [...]
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