Wiring circuit

Showing posts with label flashing. Show all posts

Sunday, October 26, 2014

AA cell drive 5 LED display flashing Single

This the circuit or schematic diagram inexpensive LED flashlight (LED display) at 5 LED amounts that apply runs on a single aa cell battery 1.2V size AA cell and has a cluster of 5 LED. By it use transistor x2 very the circuit is the character switching regulator boost up voltage 1.2V DC from be 3V DC for apply to LED super bright 5 Pcs. usability circuit be this amounts just press SW1 only.

Monday, October 20, 2014

Three Flashing LED Doorbells For The Hearing Impaired

When the push switch is operated - the buzzer will sound and the LEDs will begin to flash. For the hearing members of the household - the buzzer acts as a regular doorbell. It also re-assures the visitor that the doorbell is working.

When the push switch is released the buzzer will stop - but the LEDs will continue to flash. The length of time they will go on flashing is set by the values of R2 & C1. With the values shown in the diagram - the LEDs will flash for a further 30 seconds or so. If you make R2 a variable resistor, you can adjust the time period. If you want longer than 30 seconds - increase the value of C1 or R2.

The last circuit will flash up to two groups of 3 LEDs in tandem. This circuit will flash the two groups alternately. The alternate flashing creates the illusion of movement - and makes the display more eye-catching. Note that - although Ive drawn the two groups of LEDs side by side - the individual LEDs can be mounted in any pattern you like.

The main difference between this circuit and the last one - is the addition of the two transistor switches. The switches will each flash up to 15 groups of 3 LEDs. And - because they are getting power directly from the battery - the LEDs will glow at their full brilliance.

Three-Flashing LED-Doorbells-Circuit-Diagram

The Support Material for these circuits includes detailed circuit descriptions - and all the information you need to adapt them to a different supply voltage. link

Tuesday, August 26, 2014

12V Police Flashing Light Circuit

This schema is a very famous schema diagram among the electronic schema lovers.Today Free schema Diagrams 4U is going to give you a Famous police flashing LED schema diagram.In this schema we have used common IC NE555.The special thing of this schema is this schema can be operated with 12v power.So you can directly attach this schema with your car or truck.When you select the colors of LEDs choose red and blue

Note:
# Dont supply over 15V
# Build this schema on a PCB
# In some countries this schema is illegal.we give you this with the educational purpose.We dont get any responsibility of misusing this schema