A question recently asked on the Elektor website forum was how to make several white LEDs ‘sparkle’. The helpful author has not only provided a useful suggestion (use a random effect), but also devel-oped a suitable schema and even designed a PCB layout. You can download the Eagle files for this from the Elektor website page for this article (www.elektor.com, archive # 080329-1.zip).But...
Sunday, August 31, 2014
Beacon Transmitter Wiring diagram Schematic
Simple Beacon Transmitter Circuit Diagram.This transmitter can be used for transmitter hunts, for remote key finding, or for radio telemetry in model rockets. It can be tuned to the two meter band or other VHF bands by charging Cl and Ll. 11 is four turns of #20 enameled wire air wound, 0.25 inch in diameter (use a drill bit), 0.2 inch long, center tapped. The antenna can...
Datasheet IC Amplifier AN7143 BA5406
This time I will post about datasheet of some IC that was applied to the power amplifier. Some of his IC from IC AN7143, AN7145L, AN7145H, AN .... , Up to BA5406. Here is the datasheet it in the form of images that you can download.Datasheet IC Amplifier AN7143 - BA54...
Part 1 Contact info and web adresses of integrated circuits power audio amplifiers manufacturers
AD- Analog DevicesOne Technology Way, Norwood, MA 02062, USA. Phone: 781/329-4700http://www.analog.comAll- Allegro MicroSystems Inc.115 Northeast Cutoff, Box 15036 Worcester, MA 01615, USA. Phone: +1-508-853-5000http://www.allegromicro.comAmc - AMIC Technology, Inc.No. 2 Li-Hsin 6th Road, Science-based industrial Park, Hsin-Chu City, 300, TaiwanPhone: +886 3567 9966www.amictechnology.comAna-...
A Low Cost Hearing Aid Circuit
Small and portable unit, Useful for old men and old womenThis low-cost, general-purpose electronic hearing aid works off 3V DC (2x1.5V battery). The schema can be easily assembled on a veroboard. For easy assembling and maintenance, use an 8-pin DIP IC socket for TDA2822M.Circuit Diagrams: A Low Cost hearing Aid Circuit Parts:P1 = 10K R1 = 2.2K R2 = 330K R3 = 680R R4...
How to Build a Photodiode current to voltage converter
The Photodiode current-to-voltage converter schema uses three CA3130 BiMOS op amps in an application sensitive to sub-picoampere input currents. The schema provides a ground-referenced output voltage proportional to input current flowing through the photo-diode. Photodiode current-to-voltage converter sche...
Mini High Voltage Generator Circuit
Mini High-Voltage Generator Circuit. Here’s a project that could be useful this summer on the beach, to stop anyone touching your things left on your beach towel while you’ve gone swimming; you might equally well use it at the office or workshop when you go back to work. In a very small space, and powered by simple primary cells or rechargeable batteries, the proposed schema...
Save Your Ears A Noise Meter
‘Hello… HELLO! Are you deaf? Do you have disco ears?’ If people ask you this and you’re still well below 80 , you may be suffering from hearing loss, which can come from (prolonged) listening to very loud music. You won’t notice how bad it is until it’s too late, and after that you won’t be able to hear your favorite music the way it really is – so an expensive sound system...
Saturday, August 30, 2014
4 x 11 W single ended car radio power amplifier
FEATURESRequires very few external componentsFlexibility in use Quad single-ended or stereo BTLHigh output powerLow offset voltage at output (important for BTL)Fixed gainGood ripple rejectionMute/stand-by switchLoad dump protectionAC and DC short-circuit-safe to ground and VPThermally protectedReverse polarity safeCapability to handle high energy on outputs (VP = 0)Protected...
Build a Low Ripple Power Supply Wiring diagram Schematic
How to build a low ripple power supply schema diagram. This simple low ripple power supply schema diagram may be used where a high current is required with a low ripple voltage (such as in a high powered class AB amplifier when high quality reproduction is necessary) , Ql, Q2, and R2 may be regarded as a power darlington transistor.ZDl and Rl provide a reference voltage at...
Simple AC Static Single Pole Double Throw Switch Wiring diagram Schematic
This is a Simple AC Static Single Pole Double Throw Switch Circuit Diagram. SPDT is a a simple type of changeover electrical switch. An SPDT solid state relay is shown. When voltage is applied Ql will turn on, activating load 1, because the full line voltage appears across Q2, supplying gate current through Rl. When SI is closed. Q2 turns on removing the gate drive from Ql...
Build A 15V Chopper Amplifier Wiring diagram Schematic
This simple schema is a gain-of-1000 inverting amplifier. It will amplify submillivolt signals up to signal levels suitable for further processing. In almost all system applications, it is best to use as OUTPUT much gain as possible in the MAX420, thus minimizing the effects of later-stage offsets. For example, if schemary following the MAX420 has an offset of 5 m V, the additional...
Subwoofer booster circuit
Subwoofer booster circuit is used to enanching or boosting or increase the subwoofer amplifier, but it also can improve the quality of the bass sound on an amplifier or High Power Amplifier. Subwoofer booster circui / bass enhancer circuit based on the IC 4558 and TL074 or commonly known as IC op-amp , its suitable to be an boosting in subwoofer system, which together...
Part 3 Contact info and web adresses of integrated circuits power audio amplifiers manufacturers
Hit- Hitachi, Ltd. (ICs manufacture is handed to Renssas Ltd.)AKS Bldg., 3, Kanda Neribei-cho, Chiyoda-ku, Tokyo, 101-0022, JapanPhone: +81-(0)3-4345-6000http://www.hitachi.comHolt- Holtek Semiconductor Inc.No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan .Phone: 886-3-563-1999http://www.holtek.com.twIks- IK SemoconA-1306, Woolim Lion’s Valley, #371-28, Gasan-dong, Geumcheon-gu,...
230V 110V simple Multivibrator Wiring diagram Schematic
Most of guys asked about 230V flashing diagram so I suppose this would be the most easiest schema diagram.Here we have used common multivibrator schema and two 3V relays.You can connect your AC line via the relay.( Use relay as a switch) Even the persons who use 110V can use this schema.Not only that If you like to attach this schema for you car you can attach 12 v to...
Amplifier circuit TDA 1524A
DescriptionThis amplifier can control the volume, balance and tone controls take over. The circuit operates a specially designed IC, LM 1036. The advantage is that few external components are necessary, and that may be, which are cheaper. Used for controlling monopotmeters speaks scheme for itself. S1 loudness can be adjusted. In the position shown, the loudness. Moreover,...
Friday, August 29, 2014
Simple Phase Controlled Dimmer Wiring diagram Schematic
Simple Phase Controlled Dimmer Circuit Diagram. This is the Simple Phase Controlled Dimmer Circuit Diagram, Phase-control dimmers reduce the lamp brightness by cutting out part of the AC waveform. A phase-controlled dimmer delays the triac turn-on to a selected point in each successive ac half cycle. Use this schema only for incandescent lamps, heaters, soldering irons,...
XM Satellite Radio Vs Sirius for your Auto Sound System Selection
If youre in the market for a new auto sound system you might want to seriously take a moment and consider whether or not you would be benefited by subscribing to either Sirius or XM Satellite Radio. Both of these subscription-based services have something wonderful to offer their subscribers and both of them require specialized equipment in order to operate. This means if...
Adjustable Switching Regulator Circuit with LM2576
The Adjustable Switching Regulator Circuit with LM2576 are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version.LM2576...
Power Pulse Using by LM350 and NE555
This is a Simple Power Pulse Using by LM350 and NE555 Circuit Diagram. This schema can use to drive lamp,power LED,DC motor etc. Adjust R5 for output amplitude.Adjust R1 for output power .Power Pulse Circuit DiagramThe LM350 is adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 3A over a 1.2V to 33V output range.This schema requires 5-15V...
Dual Power Supply Circuit 6V 12V
All electronic equipment requires power supplies, either from the battery or use electricity in your home. Electronic equipment usually requires certain Power Supply consumption. Dual Power Supply Circuit 6V/12V, below. Electronic equipment typically uses direct current (DC) and the voltage and current of the adjustable electrical equipment condition. In the picture shown...
Over voltage Protection Wiring diagram Schematic
This is a Over voltage Protection Circuit Diagram. A silicon-controlled rectifier is installed in parallel with the 12-V line and connected to a normally-closed 12-V relay, K1. The SCRs gate schema is used to sample the applied voltage. As long as the applied voltage stays below a given value, SCR1 remains off and Kls contacts remain closed, thereby supplying power to the...
Car Amplifier with IC LA4445
This circuit using IC LA4445 , this is stereo amplifier with power output 2 X 18 Watt, with this circuit you can use to car amplifier or to other elctronics device. Speaker use woofer with impedance 4 Ohm with power up to 20 Watt. Minimum voltagte require 10 Volt and maximum voltage 18 volt.see schematic below : If you cant operate the circuit , please check IC...
450W audio power amplifier circuit
Below it is a circuit of power amplifiers with power output of 450 watts mono , amplifiers are also frequently used in the amplifier a high-power amplifier, which used in an event, in the field and the placed closed. Because this amplifier suitable for the woofer, fullrange speaker, and can also be fixed for the subwoofer speaker. To further strengthen and maximize the...
Computer Joystick Wiring diagram Schematic
This schema Joystick computer is very simple and can be used on any PC that has the connection to Joystick. The original schema uses a 74HC04, but can be replaced by a pin 4049 by changing the voltage, or any other multivibrator schema, one or even two transistors 555. Computer Joystick Circuit Diagr...
Thursday, August 28, 2014
Simple Outlet Smart Bar Wiring diagram Schematic
This Outlet Smart Bar Circuit Diagram project consists of a schema and a power strip with three or more shots to be fed only when passing current in the takeover. For example: If a soldering iron is connected to the control, the other outlets will be powered. The schema is small enough to be incorporated into some types of commercial outlets bars.Outlet Smart Bar Circuit Diagram List...
1985 Ford F 250 Wiring Diagram
1985 Ford F-250 Wiring Diagraminternet marketing This is 1985 Ford F-250 Wiring Diagram: electric fuel pump control, trailer, trailer,fuse link, starter relay, battery, field switch, fuse panel, electronic control, alternator, choke heater, engine control, shunt, radio noise capacitor, voltage regulator, engine control, stator, lamps on indicator, dimmer, dome, main light...
Stereo Headphone Amplifier
Circuit Skema Rangkaian - LM4910 belonging to the Boomer series of National Semiconductors is an integrated stereo amplifier primarily intended for stereo headphone applications. The IC can be operated from 3.3V ans its can deliver 0.35mW output power into a 32 ohm load. The LM4910 has very low distortion ( less than 1%) and the shutdown current is less than 1uA. This low...
2 way Active Crossover
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...
LA3161 Stereo Preamplifier Circuit
LA3161 is an integrated 2 channel pre-amplifier meant for car stereo applications. The LA3161 contains a built in voltage regulator that plays an excellent role in improving ripple rejection . The IC needs minimum number of external components and the noise level is extremely low. The IC has high input impedance (around 100K) and is available in an 8 pin SIL package.In the...
Build a Hi Low level Comparator Wiring diagram Schematic
Build a Hi-Low level Comparator Circuit Diagram, The voltage to be compared is fed through diode Dl and D2 to the voltage dividers Rl and R5 where the low and high limits are present. When the voltage level of an input signal exceeds the high threshold limit set with potentiometer Rl, the diode Dl becomes forward biased and the increased voltage on the inputs of the op amp...
Simple Power Failure Detector Wiring diagram Schematic
Simple Power Failure Detector Circuit Diagram. This schema indicates that a power outage occurred for 1, 10, 100, and 500 seconds with the values given for R* and C* . After a power failure, the schema can be reset by pushing the Reset button. Simple Power Failure Detector Circuit Diagr...
Build a Regulated driven Converter Wiring diagram Schematic
How to Build a Regulated driven Converter Circuit Diagram?.This converter delivers up to 50 mA from a 6-V battery with 78% efficiency. This flyback converter functions by feedback-controlling the frequency of inductive flyback events. The inductor`s output, rectified and filtered to de, biases the feedback loop to establish a stable output. If the converter`s output is below...
Wednesday, August 27, 2014
Unique Water Pump Controller
Unique Water Pump Controller Circuit diagram. Here is a simple solution for automatic pumping of water to the overhead tank. Unlike other water-level indicators, it does not use probes to detect the water level and hence there is no probe corrosion problem. It has no direct contact with water, so the chance of accidental leakage of electricity to the water tank...
FM adaptor circuit for car stereo
With this compact FM adapter schema plugged into the audio out of your cassete player or i Pod out put,you can listen your favorite music on your car stereo.This schema is very useful if your car stereo does not have an auxiliary in socket.The schema is nothing buy an short range FM transmitter.The FM transmitter schema is based on low power NPN transistor 2N2222.The tank...
Simple Period To Voltage Converter Wiring diagram Schematic
This is a Simple Period-To-Voltage Converter Circuit Diagram. The schema input signal drives ICD. Because ICD`s positive input (V+) is slightly offset to + 0.1 V, its steady state output will be around +13 V. This voltage is sent to ICC through D2, setting ICC`s output to +13 V. Therefore, point D is cut off by Dl, and CI is charged by the current source. Assuming the...
Magic Lights Circuit using Bi Colour LED
This is the magic lights schema which use bi-colour LED as the output to provide the light. The schema uses 14 bi-colour (red and green) LEDs having 3 terminals each. Various dancing colour patterns are generated utilizing this schema considering that each LED can create three various colours. The middle terminal (pin 2) of the LEDs will be the common cathode pin that is grounded....
5 Zone Alarm System
This is a complete alarm system with 5 independent zones suitable for a small office or home environment. It uses just 3 CMOS ICs and features a timed entry / exit zone, 4 immediate zones and a panic button. There are indicators for each zone a "system armed" indicator. The schematic is as follows: Circuit Notes Each zone uses a normally closed contact. These can be micro...
Solar battery charger
This is solar battery charger with over charge protection.This schema depends on IC LM723.Some times some batteries destroy because of charging over the limit.But this schema contains an over charge protection unit...
Simple 100W Guitar Pre Amplifier Wiring diagram Schematic
IntroductionGuitar amplifiers are always an fascinating challenge. The tone controls, gain & overload characteristics are individual, & the ideal combination varies from guitarist to the next, & from guitar to the next. There is no amp that satisfies everyones requirements, & this offering is not expected to be an exception. The preamp is now at Revision-A,...
