circuit

power supply circuit (1)

1 Watt White LED Power Supply Circuit for battery operation Using Atmega

Download FreePC project file, gerber and png copper and silk-screen: 1wattledbuck.zip Introduction I have some 1 watt warm white LEDs left over from a project and the application for them was obvious: A better battery operated lamp for use when the power fails, which it does frequently, especially during the rainy season. And this one should …

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LED1 (1)

Single and Two Cell White LED Drivers Without Inductors Using Atmega

Three inductor-free circuits that allow a white LED or UV LED to be driven from one (1.5 volt) or two flashlight cells (3 volts total) are described. The circuits on this page are: The two cell (3 volt) circuit four transistors. The simple single cell (1.5 volt) circuit requires six transistors, but it isn’t as …

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lv boost

Series Connected Voltage Boost Circuit for a Battery Operated LED Lantern Using Atmega

Photo. This is the test circuit -the basic driver is only two transistors, two resistors, the circuit was evaluated using a white LED, but when it was time to button it up and archive it, I replaced the expensive white LED with a cheap green one. Othere LED Driver Circuits on this site: White LED …

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HackEDA builds Eagle schematics and PCBs from standard circuit blocks

Welcome to Hackeda! This website was started to make designing custom electronics less painful. The basic idea is simple: Create a design by choosing from the library of circuits. Use your choices to automatically generate a schematic. Download it. The file format is Eagle 6. Correct footprints are embedded in the schematic so you’ll have …

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Overvoltage protection

An NRF24L01+ and FTDI Ready Atmega 328P-PU (3.3V, 500 MA) Microcontroller With Dual Power Capability, Undervoltage, Hysteresis, and Thyristor-Crowbar Overvoltage Protection

This board is designed to safely drive a 3.3V microcontroller and connected accoutrements. It supports primary and backup power sources and provides numerous over and under voltage safeguards. The microcontroller here is a bare-bone, no-frills Atmega 328P-PU with no leds, driven by a 16 MHz crystal. An 8-Pin female connector is wired up to the …

An NRF24L01+ and FTDI Ready Atmega 328P-PU (3.3V, 500 MA) Microcontroller With Dual Power Capability, Undervoltage, Hysteresis, and Thyristor-Crowbar Overvoltage Protection Read More »

helikopter

BATTERY ALARM CIRCUIT FOR MODEL HELICOPTERS ATTINY13

ATTINY13 Atmel microcontroller installed on the circuit model helicopter is checking the voltage of the battery the battery (or battery) voltage circuit when the level set LEDs, buzzer, giving the alam. ATTINY13 PB2, PB1,… Electronics Projects, Battery Alarm Circuit for Model Helicopters ATtiny13 “avr project, microcontroller projects, simple circuit projects, “ ATTINY13 Atmel microcontroller installed on the circuit model …

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