Solar Powered Garden Light

This simple flyback/blocking oscillator LED power supply was adapted to and built into solar powered garden light by a talented experimenter in the United States known as "mrs biggs". The method of switching the power supply off during daylight hours, thus allowing the rechargeable cell to recharge, was taken from a circuit design by Nick Baroni, of Willetton, Washington, and published on the siliconchip.com.au website.  Here is the design from mr biggs' workbench.

Mr. Baroni's original circuit used a BC547, but mrpiggss found that a BC547C (the version he bought) would work as Q1 but not Q2 (see "A Note On Transistor Selection, below). In his version, mrpiggss used 2N4401 transistors for both Q1 and Q2, to keep the bill of material as simple as possible.  He also noted that if R1 was 15k, the sunlight gating function would be more sensitive, thus keeping the LED power supply off until it was darker than when R1 is 22k. The core for L1 came from ebay with no part number or supplier but it is the size of a penny and about 3mm thick. The wire came in a 3 pack of magnet wire from Radio Shack and and are pure copper.  Being green in color and 30 gauge, the wire is easy to handle and wind. The cores have 40 turns, 20+20 (wind 20 turns, pull out the center tap, then wind 20 turns more). and removing the coating is easier than with really thin wire. The insulation on this wire can just be burnt off with a lighter, and it comes off just like magic. No scraping or sanding, although he use a small emery board to give it some tooth for soldering.  Another very nice method of removing the insulation from magnet wire came from Christian Daniel of Germany.

     "Scratching away the insulation is difficult with thin wires, it's too easy to cut or weaken them. I prefer fine corund sanding paper. Or - for very thin wires - I use an Asperin(R) pill and press the wire with the tinned hot soldering tip on it : opacht ! Put your eyes and nose away ! The hot organic acid destroys the insulation and it can be tinne nicely."  The solar panel is a standard one-battery panel. it has no info on it but puts out 1.5 volts in full sun. No idea about the current rating.D1 can be nearly any silicon or germanium diode, provided it is rated to handle the solar panel's output current into a short circuit. For most of the panels used in garden lights, this means basically, any diode you can buy. A low power Schottky or germanium diode would have a lower forward voltage drop than a small signal silicon PN diode. The 1N4001 series, as used by mrpiggss is a good choice as well because its large junction area results in a relatively low forward voltage drop.

This is the "circuit side" of the printed circuit board. The components are mounted on the opposite side. It should be noted thatthe basing for the transistors corresponds to the 2N4401, and NOT the BC547.

  Power supply unit (computer)

A power supply unit (PSU) converts mains AC to low-voltage regulated DC power for the internal components of a computer. Modern personal computers universally use a switched-mode power supply. Some power supplies have a manual selector for input voltage, while others automatically adapt to the supply voltage.
Most modern desktop personal computer power supplies conform to the ATX specification, which includes form factor and voltage tolerances. While an ATX power supply is connected to the mains supply, it always provides a 5 V standby (5VSB) voltage so that the standby functions on the computer and certain peripherals are powered. ATX power supplies are turned on and off by a signal from the motherboard. They also provide a signal to the motherboard to indicate when the DC voltages are in spec, so that the computer is able to safely power up and boot. The most recent ATX PSU standard is version 2.31 of mid-2008.

Pin Detail of IC AN5521

    Pin Detail of IC AN5521

 TV Vertical Deflection Output IC 

• Overview

The  AN5521   is an  integrated circuit designed for  TV vertical deflection  output circuit. Combining with  the deflection-signal processing IC, the vertical  output  circuit design  becomes  easy

• Features  

Low  power  cosumption, direct   deflection coil  driving capability  (Flyback voltage  of two times  as high as sup­ ply voltage  is applied during  only flyback  period)

High breakdown voltage:  60V

 

 

Amplifier : 100 W Amplifier 2SA1943 - 2SC5200 DX-AMP Circuit

 

Groupped on the Amplifier category, this 100 W Amplifier 2SA1943 - 2SC5200 DX-AMP Circuit was contain 3 wiring layout(s) circuit. More complete of the post content, you can read carefully at the main post content of this wiring layout titled 100 W Amplifier 2SA1943 - 2SC5200 DX-AMP . Just click here and jump directly to the main post content. Not only the circuit information, at the 100 W Amplifier 2SA1943 - 2SC5200 DX-AMP you as well as can find the list of component part for 100 W Amplifier 2SA1943 - 2SC5200 DX-AMP Circuit
The wiring layout above was tagged in 2SC5200 , 100W Amplifier Schematic , as well as 100W Amplifier , 2SA1943 , 2SA1943 - 2SC5200 diagram , as well as DX Amplifier Circuit , 2SA1943 - 2SC5200 amplifier , 100W amplifier PCB , as well as DX Amplifier , as well as uploaded by TB in January 23rd, 2012. For your info wiring layout above, as well as we serve for you a few other posts which we think its related as well as have a similar term with this post. We give you additional related post below. Or, for other choises, you can find the similar post which have the same tags or labels. Do not confused to find the same term, you just clicks the links belows, we ease you too see what you looking for.
Do not forget to get our latest information from us. We suggest for keep an eye in facebook, twitter, or subscribe with RSS feed. With that, we guaranted you will get faster information about our latest post at the same time we update the article.
Our engine was automatically calculate and noted that wiring layout of 100 W Amplifier 2SA1943 - 2SC5200 DX-AMP has been viewed by 222 visitor since we published the post on January 23rd, 2012. And from the number of visitors, about 148 visitor has download this wiring layout. In addition, we also detects that there are already 58 visitor who have been willing to give a rating on the 100 W Amplifier 2SA1943 - 2SC5200 DX-AMP Circuit.
 

 

100W (50W+50W) Stereo Power Amplifier Circuit Diagram using STK4191 Ic

This is another high quality 100W (50W+50W) Stereo Power Amplifier Circuit. STK4191 Hybrid IC we use for this circuit. It's diagram same as 50w stereo amplifier circuit and 70w stereo amplifier circuit previously introduced by us. But here, value of some external components, voltages are little bit changed than previous circuits. Also, this one is fairly complicated circuit and you must be use good quality PCB, ICs and other accessories to get best performance in this power amplifier.You can get superb audio quality and unmatched more power in this power amplifier and it delivers 100W Rms (50W + 50W) through a two 8Ω speaker. STK4191 power amplifier IC generates more heat and install a proper large heatsink and cooling fan with IC. Apply heatsink compound coat between IC and heatsink. You need dual power supply circuit to operate this power amplifier. Click here to see it. 

SCC3 - 12 Volt 20 Amp Solar Charge Controller Kit

24v NiMH Battery Charger Using a 12v Solar Panel