Battery charger regulator
Most off-the-shelf car battery chargers cannot not be left connected to the battery for long periods of time as over-charging and consequent battery damage will occur. This add-on circuit is placed in series with the battery being charged and is powered by the battery itself.
In effect, the circuit uses a high-current Mosfet to control the [...]
Power Supply 22V 4A 88Watts
This Power Supply puts out 22[Volts] by max. 4[A]. Be sure you use the right transformator 30[Volt] at least 130[Watt]!!! Also make sure that all capacitors can handle the delivered voltage, see schematic 63[V] will do.
Allthough one TIP2955 can deliver almost 10[A] (when oversized cooled) it’s better not to go beyond 5-6[A]. To prevent you [...]
Power suply 5V 5A
Circuit power supply 5V 5A by 7805+Mj2955
This is circuit 7805+Mj2955 power supply 5V 5A for digital circuit.Q MJ2955 for to increase form IC 7805. Q A16 for overload protect.
10 Channel Chaser for 12V/60W lamps with PIC16F628A
This project allows instant start sequentially but a dozen low-voltage lamps 12 V / 60 W, and makes them fade and always sequentially (but slower). This system has been designed to meet the demand of a visitor who wanted ten recessed low voltage spot in a driveway to his house, with the following function: – [...]
Battery Level Indicator
This circuit allows switching on a LED when the battery voltage (12V) drops below a certain threshold. The operating system is based on a comparison of tension, which comes in a zener diode. If the supply voltage is 12V and the zener diode is a 10V model (this is the case in the diagram), we [...]
Timer from 1 to 999s with PIC16F84A
This is a good looking and practical device that can be useful in many areas where countdown timer is needed. This project is based on the PIC16F84A microcontroller. The time range can be adjusted between 1 and 999 seconds. This project has 3 buttons and one of them is named Set Button. In order to [...]
8 LED VU Meter Project
A VU meter is often included in audio equipment to display a signal level in Volume Units; the device is sometimes also called volume indicator (VI). In this project we are building a basic and low cost LED VU Metre circuit . The extent (range) display is -18 dBu to +3 dBu, spread over [...]
12 Channel LED Chaser with PIC16F84A
Today we have a new category “Projects” and a new electronic project 12 Channel LED Chaser with PIC16F84A.
This project is based on the popular PIC16f84A micro-controller.The heart of this project LED chaser is the PIC16F84A PIC microcontroller.A 4MHz crystal and capacitors C1 and C2 22pf is used for providing clock pulses to the micro-controller. The [...]
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