Twinkle Twinkle X'mas Star

Twinkle Twinkle X'mas Star T.A. Babu Christmas just would not be Christmas if you do not put a flashing star on your Christmas tree. Here is the circuit of such a flashing star. Fig. 1: Twinkle-twinkle X’mas star Fig. 1 shows the circuit of the flashing X’mas star. At the heart of the circuit is a diac that controls charging and discharging of an electrolytic capacitor and thereby flashing of the star. The rest of the circuit functions...

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Liquid-Level Alarm

Liquid-Level Alarm                                   Pradeep G.                                                                  ...

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Transmitter hack. Increase the transmission range from 10ft to 200-500ft

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How It's Made LED Screen

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http://hackedgadgets.com/2010/08/08/rgb-led-lamp-driver-board/ RGB l...

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How To Wire Multiple LED's in a Series Circuit !!

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UFO round LED Chaser Kit

http://picprojects.org.uk/projects/roundchaser/ UFO round LED Chaser Kit ...

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Sound Detector Amplifier >ElectroSuite.com>> – This Sound Detector Amplifier output of a regular electret condensor microphone quite nicely by adjust sensitivity of R1. Sound Detector Amplifier – reconnsworld.com Sound Detector Amplifier U1 : LM741 Op Amp IC R1 : 1 megohm resistor R2, R3 : 6.8k ohm resistor R4 : 1k ohm resistor C1, C2 : 0.47uF ceramic capacitor MIC1 : Electret Condenser Microphone | Read more: http://...

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USB LED Light Desktop >USB LED Light Desktop This is USB LED Light Desktop electro suite, taken from the circuitstoday, this suite can be used to light your desktop when you got the power failure, it’s very simple USB power lamp. Components 1x USB Port Male R1 = 560 Ω R2 = 22 Ω / 1 W R3 = 1 kΩ D1, D2 = 1N4007 D3, D4, D5 = LED Q1 = BC558 C1 = 0,01 µF B1 = Battery 2×1,2V NiCad Cells S1 = Switch Electro Suite USB LED Light Desktop...

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6V to 220V Inverter Schematic >ElectroSuite.com>> - 6V to 220V Inverter Schematic. Starting from 6-Volt input on the DC current into 220-volt AC output. For maximum output power up to 30W only, and is also very small voltage current. 6V to 220V Inverter Schematic 6V to 220V Inverter Schematic – circuitschematicelectronics.blogspot.com Part List : R1 = 1K R R2 = 220R C1 = 10nF C2 = 100nF C3 = 47nF C4 = 0,22uF 400V Q1...

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Dancing LED Electro Suite | Home » Display » LED » Dancing LED Electro Suite Components R1 = 10 KΩ 1/4W R2, R3 = 47 KΩ 1/4W R4 = 1 KΩ 1/4W R5, R6, R7 = 100 KΩ 1/4W R8 = 820 Ω 1/4 C1, C3 = 100nF C2 = 10uF/50V C4 = 330nF C5 = 100uF/25V D1 = 1N4148 D2-D11 = 5 or 3mm LED IC1 = LM358 IC2 = 4017 MIC1 = Miniature electret microphone R9, R10 = 10 KΩ 1/4W R11 = 56 Ω 1/4W D12,D13 etc = 5 or 3mm LED Q1,Q2 = BC327 Q3 = BC337 Electro...

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http://www.google.com.bd/imgres?imgurl=http%3A%2F%2Fwww.electronicsteacher.com%2Fcircuits-and-diagrams%2Finfrared-based-schematics%2Ftransmitter.gif&imgrefurl=http%3A%2F%2Fwww.electronicsteacher.com%2Fcircuits-and-diagrams%2Finfrared-based-schematics%2F&docid=JqVXicLTcK_CUM&tbnid=vmphuOV0QFN79M&w=934&h=513&ei=8hPOUZ71BaiTigfh9oGQBA&ved=0CAQQxiAwAg&iact...

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http://www.google.com.bd/imgres?imgurl=http%3A%2F%2Fus1.webpublications.com.au%2Fstatic%2Fimages%2Farticles%2Fi1030%2F103012_5mg.jpg&imgrefurl=http%3A%2F%2Fgalia.fc.uaslp.mx%2F~cantocar%2Fmicrocontroladores%2FPICAXE%2FSILICON_CHIP_ONLINE___PICAX.HTM&docid=hZjzGE6IBr4_tM&tbnid=IQhu6jBh_V-D3M&w=782&h=512&ei=8hPOUZ71BaiTigfh9oGQBA&ved=0CAUQxiAwAw&iact...

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http://electronics.stackexchange.com/questions/33435/how-do-i-calculate-the-frequency-of-an-fm-transmitter-circu...

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How do i calculate the frequency of an fm transmitter circuit? up vote -1 down vote favorite Below is an FM transmitter circuit I found on the web that I would like to build from scratch. How I would calculate the carirer signal frequency so that I know where to tune my FM radio? If I want this to transmit my own...

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http://www.physicsforums.com/showthread.php?t=4537...

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The problem statement, all variables and given/known data. I am just trying to understand this cicuit a little better. Especially the right half, I know that the left half is just acting as an amplifier but I'm not sure how the right half works. Also how is the frequency being modulated here? The attempt at a solution. I know that C5 and L2 are used to calculate the carrier frequency, but I am very unfamiliar with this type of set up for...

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BC549C Condenser Microphone Pre Amplifier | 5,184 view(s) Home » Audio » BC549C Condenser Microphone Pre Amplifier >ElectroSuite>.com – BC549C Condenser Microphone Pre Amplifier. This is a very simple preamplifier circuit for condenser microphone. This mic preamplifier also can be used for dynamic microphone. BC549C Condenser Microphone Pre Amplifier – Schematics.circuitdiagram.net | Read more: http://electrosuite.com/aud...

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FOUR-STAGE FM TRANSMITTER  PRADEE G. This FM transmitter circuit uses four radio frequency stages: a VHF oscillator built around transistor BF494 (T1), a preamplifier built around transistor BF200 (T2), a driver built around transistor 2N2219 (T3) and a power amplifier built around transistor 2N3866 (T4). A condenser microphone is connected at the input of the oscillator. Working of the circuit is simple. When you speak near the...

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FLASHER CIRCUITS Basic Electronics Course  Page 83 This page comes from our Basic Electronics Course It is so important, we have added it to the FREE section. The complete BEC is in the subscription section Some circuits in this discussion are available from Talking Electronics as kits. (or this link for the web: Talking Electronics) All the circuits can be built on...

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