Power Controller Circuits

Power Controller Circuits, Power Supplies

Simple DC power delay circuit

Description. The circuit diagram shown here is of a simple DC power delay circuit that is based on an SCR. This circuit is a very handy one and can be employed in many applications. The working of this circuit is very simple. When the input power is applied the capacitor C2 charges through resistor R2 […]

Power Controller Circuits

Temperature controlled fan regulator

How cool will it be to have an intelligent ceiling fan that will auto-adjust its speed to your comfort! That’s what we are trying to achieve here. Fans help to reduce room temperature by circulating air. This circulation mixes hot and cool air in the room, and in effect reduces the temperature to an average

Motor Related, Power Controller Circuits

Temperature controlled DC fan

Description. Here is a simple circuit based on two transistors that can be used to control the speed of a 12 V DC fan depending on the temperature.A thermistor (R1) is used to sense the temperature. When the temperature increases the base current of Q1 (BC 547) increases which in turn decreases the collector voltage

Lighting Circuits, Power Controller Circuits

Modified lamp dimmer circuit

Description. This is a modification of the circuit Simple Lamp Dimmer/Fan Regulator  previously  posted here. The working of the circuit is same as that of the previous, but in addition a snubber circuit consisting of resistor R4 and capacitor C3  is included to improve the performance of the triac T1. A fuse is also included

Motor Related, Power Controller Circuits

PWM Motor Speed Control Circuit

In this project guide we’re building PWM Motor Speed Control circuit using two digital IC’s. We’ve published different types of PWM circuits, say from the basic PWM using NE 555 IC, to the much advanced PWM using micro controllers like AVR, 8051, and Arduino boards. PWM – is basically pulse width modulation and if you’re new

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