My Light Diagram

Components List: R1 = 2K2 Ohm 2,5 Watt R2 = 240 Ohm R3,R4 = 0.1 Ohm 10 Watt R7 = 6K8 Ohm R8 = 10K Ohm R9 = 47 Ohm 0.5 Watt R10 = 8K2 Ohm C1, C7, C9 = 47nF C2 = 4700uF/50v – 6800uF/50v C3, C5 = 10uF/50v C4, C6 = 100nF C8 = 330uF/50v C10 = 1uF/16v C11 = 22nF D1…D4 = four MR750 (MR7510) diodes (MR750 = 6 Ampere diode) or 2 x 4 1N5401 (1N5408) diodes. D5 = 1N4148, 1N4448, 1N4151 D6 = 1N4001 D10 = 1N5401 D11 = LED D7, D8, D9 = 1N4001 TR = 2 x 15 volt (30volt total) 6+- Ampere IC1 = LM317 T1, T2 = 2N3055 P1 = 5k P2 = 47 Ohm or 220 Ohm 1 Watt P3 = 10k trimmer F1 = 1 Amp F2 = 10 amp Circuit Description: This is an easy to make power supply that has reliable, clear and regulator 0 to 28 Volt 6/8 Amp output voltage. By making use of two 2N3055 transistor, you’ll get two times the amount of electric current. Although the 7815 power regulator may kick in on short circuit, overload and thermal overheating, the fuses in the main section of the transformer and the fuse F2 at the output will safe yo...

author : Pafilis Ioannis - Aristotle University of Thessaloniki Department of Electronics and Telecommunications In the present article , we will describe the function of a digital stopwatch , 0 – 99 sec . The function of the stopwatch , relies in the use of 4 integrated circuits, which in this case belong to National Semiconductor ( http :// www . national . com ). It is obvious that other integrated circuits can be used to achieve the same result, however in this case we have used the following parts : Α. 1 x CD4060BM (14 stage ripple carry binary counter) B. 1 x CD4040BM (14 stage ripple carry binary counter) C. 1 x MC14518B (BCD counter) D. 2 x MC14511B (BCD to seven segment driver) E. 2 x 7 segment LED displays The circuit that has been used is shown in picture 1. Through the experimental part we will explain each of the parts function, but in order to have a notion of the basic idea, let just say, that this circuit besides the 5V...

I am quite sure that by now, many of us have already amassed quite a collection of USB flash drives over the months and years that have gone by. Hardly any conference or road show is devoid of a USB flash drive which more often than not contains the press release of a particular company, or a portfolio of new products. Having said that, it can be pretty difficult trying to keep track of just where exactly have you placed that particular file over in the myriad of USB flash drives that you have in your collection, and instead get a personal USB flash drive for yourself so that you can keep personal things private and secure. Just in case you are in the market scouting for a new USB flash drive, have you considered checking out the Mushkin Atom 3.0? The Mushkin Atom 3.0 USB flash drive will place plenty of emphasis on convenience, where it comes in an extremely small form factor which is slightly less than the size of your average quarter. All of this without having to sacrifice on perfo...

This is 0-24VDC digital PIC power supply circuit. This variable power supply controlled with PIC microcontroller. There is LCD display in this circuit which will show the actual value of power supply output. This power supply use push on switch to adjust the output voltage and current value. Schematic Diagram: Component List : C1 = 2000uF per AMP, 40V (adjust capacity to power supply amps) C2,C3,C12,C15,C18,C21 = 0.1uF CER C4 = 0.01uF CER C5A,C5B,C5C,C5D = 0.01uF CER C6,C7 = 0.05uF CER C8 = Not used C9,C11,C19,C20 = 1uF CER C10 = 470uF 15V EL RADIAL C13 = 4.7µF 50V EL RADIAL C14 = 0.001uF CER C16,C17 = 22pF CER D1,D2,D4,D5 = 1N4148 D3 = 1N4004 Br1 = 1<10A BRIDGE RECTIFIER (adjust seize to power supply amps) DZ1 = 1N4751 30V ZENER IC1 = LM317KCS TO220 IC2 = LM337LZ TO92 IC3 = LT1491CN special HV opamp, do not substitute IC4 = PIC16F876A Q1 = 2N3906 Q2A to Q2D = TIP142TU 1 to 5 transistors (adjust quantity to power supply amps) Q3A to Q3D = 2N3904 (adjust quantity to power supply am...

  General Description This is a high quality power supply with a continuously variable stabilised output adjustable at any value between 0 and 30VDC. The circuit also incorporates an electronic output current limiter that effectively controls the output current from a few milliamperes (2 mA) to the maximum output of three amperes that the circuit can deliver. This feature makes this power supply indispensable in the experimenters laboratory as it is possible to limit the current to the typical maximum that a circuit under test may require, and power it up then, without any fear that it may be damaged if something goes wrong. There is also a visual indication that the current limiter is in operation so that you can see at a glance that your circuit is exceeding or not its preset limits.     Technical Specifications - Characteristics Input Voltage: ................ 24 VAC Input Current: ................ 3 A (max) Output Voltage: ............. 0-30 V adjustable Outp...

This is the simple Simple Adjustable Power Supply 0-15V / 5A Circuit Diagram. This adapted ability accumulation can be adapted amid a few volts and 15V with P1 and with P2 acclimatize the high absolute ( 15.0V ). R6 amount is 0.7V / Imax area Imax is the best current. At Imax = 5A, R6 is 0.14Ω Simple Adjustable Power Supply 0-15V / 5A Circuit Diagram T1 and T2 charge accept heatsinks because ability losses are abundant at a low achievement voltage and a Imax according accepted but you can affix the lamp L to abate this losses. I’ve body this adjustable ability accumulation and works great! I achievement you’ll adore it too and accept fun body this abundant counterbalanced ability supply

Image CadSoft Eagle Professional 6.5.0 Multilingual | 44.27 MB EAGLE (Easily Applicable Graphical Layout Editor) is an ECAD program produced by Cadsoft in Germany. It is very commonly used by private electronics enthusiasts, because there is a very usable free demo version for nonprofit use and is available in English and German. Cadsoft has released versions for Microsoft Windows, Linux, and Mac OS X. EAGLE provides a schematic editor, for designing circuit diagrams and a tightly integrated PCB layout editor, which automatically starts off with all of the components required by the schematic. Components are manually arranged on the board, with the help of coloured lines showing the eventual connections between pins that are required by the schematic, to aid in finding a placement that will allow the most efficient track layout. It also provides a good autorouter, which once the components have been placed will attempt to automatically find an optimal track layout to make the electrica...

This is a Simple Voltage Converter 0.5v to 6v Circuit Diagram . Conventional silicon transistors just can't operate at voltages less than about 0.7v. Old germanium transistors could be used, but those are hard to find these days and most are rather large in size. Some new n-channel MOSFET devices with very low gate-source threshold voltage can operate at quite low voltages. I've been experimenting with various devices and came up with one electronic circuit (shown below), which demonstrates how to boost the low voltage from a single solar cell to a higher voltage.  Voltage Converter 0.5v to 6v Circuit Diagram The key component in the circuit below is a cheap single logic device from Texas Instruments. It turns out that TI's 74AUC family of parts can work down to about 0.45 volts. I tried one of their single schmitt trigger parts and found I was able to make on oscillator function nicely at 0.5 volts. I then used a charge pump technique and a cheap NPN transistor to form a ...

Timers Both PIC16f887 and 877 have three timers; timer 0, timer 1, and timer 2. Timer 0 is 8-bit and can also be use as counter, Timer 1 is 16-bit timer as well as a counter, where as Timer 2 is 8-bit timer and can be used as the PWM time base for the PWM mode of the CCP module(s).  Timer 0: The Timer0 module timer/counter has the following features: 8-bit timer/counter Readable and writable 8-bit software programmable prescaler Internal or external clock select Interrupt on overflow from FFh to 00h Edge select (rising or falling) for external clock Timer mode is selected by clearing bit T0CS (OPTION_REG<5>). In Timer mode, the Timer0 module will increment every instruction cycle (without prescaler). Counter mode is selected by setting bit T0CS (OPTION_REG<5>). In Counter mode, Timer0 will increment either on every rising or falling edge of pin RA4/T0CKI. The incrementing edge is determined by the Timer0 Source Edge Select bit, T0SE (OPTION_REG<4>). Clearing bit T...

Now Build a Digital Stopwatch 0-60sec By using the same circuit of the Digital Stopwatch 0-99sec , we can add an AND gate, and transform the 0 – 99sec stopwatch to a 0 – 60sec stopwatch.We must find a way to control the RESET function of the BCD counter, which is responsible for the counting of the seconds. As we studied above, the circuit resets when we have 99 to 100, that is 1001 1001 à 0001 0000 0000. To make a transformation successfully we must force the pulse from 59 to 60 0011 1001 à 0100 0000 on the output of the BCD counter. By placing the AND gate, with its inputs on the Q1 and Q2 of the BCD counter of the decades, we make sure that when the gate closes, the RST input of the BCD counter will be set to logical “1”, which on its turn, will force the circuit to start over. The transformed circuit appears in picture 2.