Black Light Project

This is a simple ultra-violate light circuit diagram that can be powered by a 6 volt battery or power supply that is capable of supplying 1 or more amps.

Parts Total Qty. Description
C1 1 0.0047uf Mono Capacitor
C2 1 0.1uf Disc Capacitor
D1, D2 2 1N4007 Diode
FTB 1 Filtered Blacklight Tube
IC1 1 555 Timer IC
P1 1 10k Trim Pot
Q1 1 TIP30 PNP Power Transistor
R1 1 470 Ohm Resistor
R2 1 270 Ohm Resistor
T1 1 Medium Yellow Inverter Transformer
MISC 1 IC Socket, Heat Sink For Q1, Screw, Nut, Wire and PC Board

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Adjustable or Controllable Strobe Light

This is uses a much more powerful "Horse Shoe" Xenon tube. Which produces more light flash. You can control the flash rate up to about 20Hz. Do not look directly at the flash tube when this is running!

Parts:

R1 250 Ohm 10 Watt Resistor
R2 500K Pot
R3 680K 1/4 Watt Resistor
D1,D2 1N4004 Silicon Diode
C1, C2 22 uF 350V Capacitor
C3 0.47uF 400 Volt Mylar Capacitor
T1 4KV Trigger Transformer (see "Notes")
L1 Flash Tube (see "Notes")
L2 Neon Bulb
Q1 106 SCR
F1 115V 1A Fuse
Misc Case, Wire, Line Cord, Knob For R2


Note:

T1 and L1 are available from The Electronics Goldmine. This ciruits is NOT isolated from ground. Use caution when operating without a case. A case is required for normal operation. Do not touch any part of the circuit with the case open or not installed. Most any diodes rated at greater then 250 volts at 1 amp can be used instead of the 1N4004's. Do not operate this circuit at high flash rates for more than about 30 seconds or else C1 and C2 will overheat and explode. There is no on/off switch in the schematic, but you can of course add one.
Sourch

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CHRISTMAS STAR By MAINS-OPERATED

There is a low cost circuit diagram of Christmas star that can be easily maked even by a novice. The main advantage of this circuit is that it does not equire any step-down transformer or ICs.

Parts List:
R1 ------------------ 100 ohm
R2 ------------------ 100 ohm
R3 ------------------ 10 ohm
R4 ------------------ 100K
R5 ------------------ 100K
R6 ------------------ 10K
R7 ------------------ 10K
C1 ------------------ 0.1µ
C2 ------------------ 220µ
C3 ------------------ 0.1µ
C4 ------------------ 47µ
C5 ------------------ 47µ
D1 ------------------ 1N4007
D2 ------------------ 1N4007
D3 ------------------ 1N4007
ZD1 ---------------- 5.6V
LED1 -------------- Any
T1 ------------------- BC548
T2 ------------------- BC548
T3 ------------------- BC548
MT1,MT2 --------- BT136

Circuit Design By: PRINCE PHILLIPS


Sourch

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