Automatic Lamp Regulator Circuit Diagram
Automatic Lamp Regulator Circuit Diagram. This circuit automatically adjusts the brightness of a lamp according to the intensity of the surrounding light. A sensor measures the total surrounding brightness and the lamp's light intensity is controlled in the opposite direction. When the surrounding light is much brighter than usual (as regulated through the pot P1) the circuit dims the lamp. On the other hand, when the surrounding light is darker than usual, the circuit increases the current supply to the lamp increasing its light intensity. This negative feedback regulation technique ensures a relatively constant overall room illumination.
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| Automatic Lamp Regulator Circuit Diagram |
Automatic Lamp Regulator Circuit Diagram
This circuit automatically adjusts the brightness of a lamp according to the intensity of the surrounding light.
A sensor measures the total surrounding brightness and the lamp's light intensity is controlled in the opposite direction.
When the surrounding light is much brighter than usual (as regulated through the pot P1) the circuit dims the lamp.
On the other hand, when the surrounding light is darker than usual, the circuit increases the current supply to the lamp increasing its light intensity.
This negative feedback regulation technique ensures a relatively constant overall room illumination.
The sensor used in this circuit is an OPL100. It has a photodiode and an integrated regulator.
The regulation control is passed on to the actual lamp circuit through an optocoupler that provides the necessary electric and galvanic isolation.
This optocoupler technique is very important to increase the safety level of the circuit. Potentiometer P1 provides manual brightness adjustment.
Follow safety precautions in constructing this device. Insulate all high voltage lines properly. Use insulating box to house the circuit. The triac must be heatsinked and insulated properly.
Printed Circuit Automatic Lamp Regulator
Parts Placement Layout Automatic Lamp Regulator
