Lights and Display Board Circuits

Adjustable Strobe Light Schematic Circuit Diagram

A strobe light is a type of specialized lamp that produces a continuous series of short, bright flashes of light. Strobe lights are also called strobes, stroboscopes, or stroboscopic lamps.

This one uses a much more powerful “horseshoe” Xenon tube which produces more light. You can also control the flash rate up to about 20Hz. Do not look directly at the flash tube when this thing is on!

Circuit diagram

Adjustable Strobe Light Schematic Circuit Diagram 1

PC Board Layout

Adjustable Strobe Light Schematic Circuit Diagram 2

Parts Placement

Adjustable Strobe Light Schematic Circuit Diagram 3

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

1. T1 and L1 are available from The Electronics Goldmine
2. This ciruits is NOT isolated from the 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.
3. Most any diodes rated at greater than 250 volts at 1 amp can be used instead of the 1N4004’s.
4. Do not operate this circuit at high flash rates for more than about 30 seconds or else C1 and C2 will overheat and explode.
5. There is no on/off switch in the schematic, but you can, of course, add one.

A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.
A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Resistors can also be used to provide a specific voltage for an active device such as a transistor.

The unit of the electrical resistance, measured with direct current, is the ohm (abbreviated Ω), named after the German physicist and mathematician Georg Simon Ohm (1789-1854).

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