In this project we will use TRIAC to control the brightness of the AC bulb with a IR TV Remote. You can also control Fan speed with your TV remote using this TRIAC Dimmer circuit.
Figure 7. Application circuit and its equivalent diagram at turn-off For a second order linear differential equation with a step function input, the voltage variation across the snubber capacitance (VCs(t)) and the triac (VT(t)) is given by: 1 ω02 ⋅ d2VCs dt2 t + 12 ⋅ ξω0 ...
This is a modification of the circuitSimple Lamp Dimmer/Fan Regulatorpreviously 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...
resistor is used to control the firing angle of the triac. An optocoupler, such as the MOC3021, is used to provide isolation between the high voltage side and the low voltage control signals side. The complete circuit diagram for the firing angle control circuit for the triac is shown below...
1) Simple LED Chaser Circuit Diagram Though the more complex lighting might need the incorporation of microcontroller ICs, simpler yet very interesting light effects can be generated through ordinary ICs like IC 4017 and IC 555 as shown below. ...
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expense of requiring more discrete components with a much greater footprint. Four types of optoisolator components (from left to right): Schmitt buffer, triac, phototransistor, and SCR. These devices can also be configured in multiple channels....
Switching Thyristors like SCR, TRIAC etc. Magnetic flux sensors. Voltage or current limiting circuit. Bistable oscillators. Voltage or current regulators. Phase control circuits. UJT relaxation oscillator The circuit diagram of a UJT relaxation oscillator is given shown above. R1 and R2 are current ...
Fig. 2 shows the circuit diagram of the sawtooth wave generator. The heart of the circuit is the NE555 timer IC, which is used for generating the sawtooth waves. This is a very simple and inexpensive circuit for generating sawtooth waveforms. ...
FIG. 17 is a diagram of triac gate triggering signal source; FIG. 18 is a diagram of triac and AC-DC converter; FIG. 19 is a diagram of an energy storage module and a DC-DC converter; and FIG. 20 is diagram of another half wave zero crossing detect circuit; and FIG. 21 is a ...