This
controller enables the use of any ordinary incandescent lamp
to simulate the flickering illumination given off by a candle,
oil lamp, or gas lamp. Special purpose bulbs are available for
this but are often very expensive and come in few styles. The
controller is completely electronic and produces a truly random
effect . A microcontroller is used to generate a random waveform
without discernable patterns or repetition cycle seen in other
approaches. Therefore a realistic appearing flicker effect is
achieved. Traditional
approaches using several square wave generators and ordinary
timer circuits cannot do this. The
controller uses switching type circuitry and power dissipation
is minimal. As phase controlled switching is not used, very
little RF interference is generated and is not a problem to
other equipment in use. Several of these controllers can be
used with a number of suitably colored lamps to simulate a fire
in a fireplace. Useful for Halloween and Christmas lighting,
or in situations where mood lighting is desired. Eliminates
danger and fire hazards associated with candles and oil lamps.
This controller can be used with 12 to 120 volt lamps (240V
also supported on special order), up to a 2.5 ampere load, (6
Amperes with a suitable heatsink) and operates on AC of either
50 or 60 Hz. Flicker rate is adjustable for realistic effects
with different lamp sizes. This
controller
will operate from dimmers that supply a symmetrical sinusoidal
AC waveform, typically down to about 20% of line voltage. Operation
from other type dimmers is not guaranteed and at your own risk.
Below
is illustration of a Christmas wreath using a 120 Volt flame
style incandescent lamp and one of these controllers. The controller
is mounted inside a small cardboard tube used as the candle
body. The bulb lamp and socket fit into the top of the candle
body. The controller requires about 20 mA, the rest is consumed
by the lamp. The kit consists of controller board and all parts
that mount on it. Wreath
is for illustration only and not included as part of this product.
