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Human Sensing Circuits
RF & Radiation
Optical Sensing Circuits
Free Energy Circuits
AC to DC & DC to DC
Solar Cell Circuits
Micro Power Circuits
Switching Power Supplies
Light Laser LED
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Data Bus Circuits
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RF Converter Circuits
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voltage to frequency
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Video Wall circuits
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8051 / 8052
PCB CAD Software
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Remote Control Toy
H Bridge Circuit
DIY HV Variable Cap
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Power Supply Circuits
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Solar Cell Circuits
Intelligent Solar Garden Light using an Arduino
I bought a solar powered garden light. The solar panel charges the batteries and when it gets dark the lights (3x LEDs) turn on until it either gets lights again or the batteries run out. First, the batteries. The control box houses the batteries, which are three Ni-MH AA cells. They are 600mAh. (That`s not a typo six hundred). I swapped them
Sustainably solar and wind powered wireless networking
Sustainable satellite 802.11b wireless internetwork and how it was achieved.
Solar Power / Panel Inverter using Attiny45
For the last year I`ve been working on a prototype for a Solar Inverter that can be Grid Intertied. A solar inverter takes the 12V DC (or other voltages) from.
12v solar led night activated lamp
Solar Powered Remote Control Surveilance
Then iron the printed layout at minimum heat until the ink sticks to the PCB. It may take more than an hour to finish. Remove the transparent paper afterwards. 6) After that, submerge the PCB with Ferric Chloride Liquid until the expose copper is totally dissolved. Carefully make sure that the ink does not also dissolve so it can protect the wa
Solar Charge Controller connection with solar panel
Solar charge controller is an electronic device which is used in solar system installation to control the amount of charge going towards the battery from solar panel. Charge Controller are available in different types and ratings. The term "charge controller" may refer to control circuitry integrated within a solar system or to either a stand-alon
5v regulated solar cell power supply circuit diagram
Powered with solar panel, the circuit will give you 5V pure regulated DC voltage. The circuit is made up of an oscillator transistor as well as a regulator transistor. The solar panel charges the battery when sunlight is bright enough to generate a voltage above 1. 9v. A diode is necessary between the panel and also. This is the schematic diagram
Solar power related schematics
Current meter used to measure the current from a solar panel. It has very low power loss for currents in the 0-10A range. It also works as a general purpose DC current meter Gate Boost Solar Engine The Gate Boost SE uses a 1381, a 2N7000 MOSFET and a 2N3906 with a unique voltage doubler to increase the voltage applied to the gate of the MOSFET. P
Solar Panel Voltage Regulator Charger Circuit
We all know pretty well about solar panels and their functions. The basic functions of these amazing devices is to convert solar energy or sun light into electricity. Basically a solar panel is made up discrete sections of individual photo voltaic cells. Each of these cells are able to generate a tiny magnitude of electrical power, normally around
SCC3 12 Volt 20 Amp Solar Charge Controller
SCC3 12 Volt 20 Amp Solar Charge Controller. A kit with the circuit board and parts for this circuit is available from CirKits. SCC3 - 12 Volt 20 Amp Solar Charge Controller (C) G. Forrest Cook June.
Solar Power Supply
This circuit delivers either 4. 8 or 7. 2 V regulated at 15 mA with a 3-V input from a bank of photocells. Rl should be 453 kQ for a 7. 2-V output and 274 for a 4. 8-Vdc output. Regulator efficiency is around 70%. This should be considered when selecting suitable solar cells.
Solar to 6V Batt to LED emergency light circuit
Today we discuss about a simple solar LED circuit. We know that solar panels comes from 12Volt 3watt to larger sizes. So, for storing energy, we need a 12Volt battery. As we don`t want jhamela`, we prefer SLA SMF batteries. 12Volt SMF batteries comes around 650-700 rupees, while 6Volt SMF batteries comes in 150-200 rupees, commonly known as charge
Solar Panel Based Charger And Small LED Lamp
You can save on your electricity bills by switching to alternative sources of power. The photovoltaic module or solar panel described here is capable of delivering a power of 5 watts. At full sunlight, the solar panel outputs 16.5V. It can deliver a current of 300-350 mA. Using it .
12V LDO Solar Charge Controller
This Low Dropout Voltage (LDO) solar charge controller uses a simple differential amplifier and series P channel MOSFET linear regulator ”their compatibility seems like a marriage made in heaven. Voltage output is adjustable. It is mainly intended for charging 12V lead-acid batteries. The input voltage exceeds the input voltage by 1. 25V when char
Solar Cell Voltage Regulator
This device is designed to be a simple, inexpensive comparator`, intended for use in a solar cell power supply setup where a quick too low` or just right` voltage indicator is needed. The circuit consists only of one 5V regulator, two transistors, two LEDs, five resistors, two capacitors, and one small battery. Although a 4-V battery is indicated,
Solar Powered High Efficiency Charger
This is a simple NiCd battery charger powered by solar cells. A solar cell panel or an array of solar cells can charge a battery at more than 80 % efficiency provided the available voltage exceeds the fully charged` battery voltage by the drop across one diode, which is simply inserted between the solar cell array and the battery. Adding a step-do
Make this Solar Powered Fence Charger Circuit
A Fence charger or energizer is an equipment which is used for charging(electrifying) a fence or a boundary in order to protect the inside premise from human or animal interventions. Since these boundaries are mostly of large fields and parks, are normally away from the main cities, and powering them through some renewable option becomes more suit
Solar Panel AC Mains Relay Changeover Circuit
The discussed automatic change over relay circuit was requested by Mr. Karimulla Baig. The circuit normally charges the connected battery at constant current through the power received from the solar panel, andrevertsto DC power from an AC/DC adapter in the absence of solar energy (during night time). Lets the read the request in more details: i ha
Solar power related schematics
Controller for Hybrid Power Plant block diagram of the HPP, comprised of 440 Wp photovoltaic modules, 1 kW wind turbine and 5 kW diesel engine as a back-up. HPP is a centralized PV and wind power generation plant, using battery to store the produced dc current electricity. To cater for emergencies, a conventional diesel generator is also provided.
The simple solar energy of adaptation supplies power the control device of the street lamp designs and realizes
Have already gone through 3 stages till a few days ago in the developing of street lamp control device of solar energy: First generation function simple and crude, turn on or off light, control, need, connect light sensitive in conformity with device, regular time can`t be set up, without protective circuit of the battery, the lifetime of system...
Solar Charger for 6V 4.5Ah Battery
Here is a solar charger circuit that is used to charge Lead Acid or Ni-Cd batteries using the solar energy power. The circuit harvests solar energy to charge a 6 volt 4. 5 Ah rechargeable battery for various applications. The charger has Voltage and Current regulation and Over voltage cut off facilities. 12 volt DC is available from the panel to ch
Buck Converter Powers 5-V Circuits From 12-V Solar-Cell Array
This Idea for Design describes a 12-V dc to 5-V dc (±5%) switched-mode power supply (SMPS). The supply uses a 12-V input from an array of four 3-V dc, 40-mA solar cells connected in series
Build An Efficient 500-W Solar-Power Inverter Using IGBTs
IR`s Wibowa Chou explains the advantages of 4th-generation IGBTs over MOSFETS with a practical solar inverter application.
Solar Powered Long Range FM Transmitter
There are many miniature FM transmitter bug circuits online, this one is unique in that it runs completely on solar power. No battery is required. As long as the sun is shining on the PV panel, the transmitter will transmit. The transmitter bug is useful as a .
mosfet How to switch between a solar panel and battery
A 12v battery is being charged from a solar panel. When battery is 12v solar panel is disconnected from battery and connect the load with battery. And again solar panel is connected with battery when battery voltage is say 10v. How to switch simply Which one is preferable, optocoupler or mosfet and how they are interconnected for proper switchin
Solar Cells Light-Sound Converter
Solar Cells Light-Sound Converter. This is experimental circuit that converts light into sound..
Solar Cell Charger Schematic
Solar Cell Charger Schematic. The circuit was built with a single oscillator system (blocking oscillator)..
Solar Cell Parallel Circuits
Solar Charger Schematic
To take advantage of sunlight shining on the earth can continue to be utilized to serve as a power source so that we can at least save on electricity prices continuing to rise, below is one of a series of simple power plant can be created and used to fill your motorcycle battery or for emergency lights. Sunlight is received by the solar panels are
This solar tracker circuit is an open source circuit and anyone may edit the circuit to his/her own preference. Watch the video for other useful information regarding features the solar tracker does and does not include that you may have to implement yourself.
A solar panel is, as the name says, a panel which collects solar energy and converts it to electricity. At least that`s my simple view of it. A solar panel consists of a background on which solar cells are "stuck". These cells are interconnected and ultimately there is an electric wire which can be linked to an inverter. In a system panels can be
Free Energy Circuits
Battery Charger Circuits
AC-DC & DC-DC Circuits
Current Limiting Circuits
Micro Power Circuits
High Voltage Circuits
Switching Power Supply Circuits
Ultrasonic distance finder circuit
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
DIY HV Variable Capacitor
DIY PMA Alternator Plans
Digital Signal Integrity