FREE CIRCUIT DIAGRAMS 4U: Christmas star

Free Electronic Circuits,Schematic Diagram,Circuit Diagrams

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Electronic Circuit,Schematic Diagram,Circuit Diagrams

electronic circuit, circuit diagram, circuit schematic, schematic diagram, electronic diagram, audio, amplifier, power supply, guitar effect, current loop, current limiter, video, receiver, transmitter, transceiver, transistor, radio frequency, rf, active filters, digital, analog circuit, pwm, micro controller Free download

Saturday, November 07, 2009

Christmas star

This is a circuit for your Christmas star.Here LEDS are fading gradually.And If you are creative you can make a wonderful creation through this circuit.And I hope to give you more Christmas circuits.So try this

Parts:

C1 1µF 63V Polyester Capacito

C2 100µF 25V Electrolytic Capacitor

D1-D4 etc 5 or 3mm. LEDs

IC1 LM358 Low Power Dual Op-amp

R1,R2 4K7 1/4W Resistors

R3 22K 1/4W Resistor

R4 1M 1/4W Resistor

R5 2M2 1/4W Carbon Trimmer

R6,R10,R11,R14,R15 10K 1/4W Resistors

R7,R8 47K 1/4W Carbon Trimmers

R9,R13 27K 1/4W Resistors

R12,R16 56R 1/4W Resistors

Q1,Q2,Q4 BC327 45V 800mA PNP Transistors

Q3,Q5,Q6 BC337 45V 800mA NPN Transistors

SW1 SPST miniature Slider Switch

Note

# If you dont like to use trimmers, suggested values for a 9V supply are:R4=3M9, R9 & R13=47K and trimmers replaced by a short.

# If you want to use 7 LEDs per strip R7 & R8 should be changed to 100K.and give 15v