Motor Circuit. - There are many electronic design circuit for controlling everything like motor, lamp, temperature, etc. One popular controller motor speed electronic design circuit is designed to control fan speed using induction motor 220VAC.
In here we will show you one of the digital fan speed control circuit with using 220VAC induction motor popular today. So, the electronic design circuit of digital fan speed control circuit look like shown in Figure 1 below. From the circuit shown, that there many integrated circuit (IC) used look like CD4510BE, CD4051, CD4543, MOC3011, LM7809, 4N33, and CD4093.
In here we will show you one of the digital fan speed control circuit with using 220VAC induction motor popular today. So, the electronic design circuit of digital fan speed control circuit look like shown in Figure 1 below. From the circuit shown, that there many integrated circuit (IC) used look like CD4510BE, CD4051, CD4543, MOC3011, LM7809, 4N33, and CD4093.
Beside we will show you electronic design circuit and component parts need, we also will give you global description about this circuit. So, please enjoy to continue reading this article until finish and get more useful.
Electronic Circuit Design
Component Parts
- CD4510BE,
- CD4051,
- CD4543,
- MOC3011,
- LM7809,
- 4N33,
- CD4093
- UJT2N2646
- Zener diode
- Transformer
- Triac BT135
- Resistors
- Capacitors
- 7 Segment
- Rectifier diode
Description
The electronic circuit design like in Figure 1 above show you digital fan speed control circuit using CD4510BE IC. Other component need also that can supply with low voltage DC 12V source to charge this IC and all system after down by IC LM7809. With this electronic design circuit you can produce stereo channel selector for your audio system that useful now.
According Circuitdiagram blog mentioned that the current step number is displayed on a 7-segment display. Speed can be varied over a wide range because the circuit can alter the voltage applied to the fan motor from 130V to 230V RMS in a maximum of seven steps.
The triac used in the final stage is fired at different angles to get different voltage outputs by applying short-duration current pulses at its gate. For this purpose a UJT relaxation oscillator is used that outputs sawtooth waveform. This waveform is coupled to the gate of the triac through an optocoupler (MOC3011) that has a triac driver output stage.
The pedestal voltage control is used for varying the firing angle of the triac. The power supply for the relaxation oscillator is derived from the rectified mains via 10 Kohm, 10W series dropping/limiting resistor R2.
The pedestal voltage is derived from the non-filtered DC through optocoupler 4N33. The conductivity of the Darlington pair transistors inside this optocoupler is varied for getting the pedestal voltage. For this, the positive supply to the LED inside the optocoupler is connected via different values of resistors using a multiplexer (CD4051).
The value of resistance selected by the multiplexer depends upon the control input from BCD up-/down-counter CD4510 (IC5), which, in turn, controls forward biasing of the transistor inside optocoupler 4N33. The same BCD outputs from IC5 are also connected to the BCD-to-7-segment decoder to display the step number on a 7-segment display.
The triac used in the final stage is fired at different angles to get different voltage outputs by applying short-duration current pulses at its gate. For this purpose a UJT relaxation oscillator is used that outputs sawtooth waveform. This waveform is coupled to the gate of the triac through an optocoupler (MOC3011) that has a triac driver output stage.
The pedestal voltage control is used for varying the firing angle of the triac. The power supply for the relaxation oscillator is derived from the rectified mains via 10 Kohm, 10W series dropping/limiting resistor R2.
The pedestal voltage is derived from the non-filtered DC through optocoupler 4N33. The conductivity of the Darlington pair transistors inside this optocoupler is varied for getting the pedestal voltage. For this, the positive supply to the LED inside the optocoupler is connected via different values of resistors using a multiplexer (CD4051).
The value of resistance selected by the multiplexer depends upon the control input from BCD up-/down-counter CD4510 (IC5), which, in turn, controls forward biasing of the transistor inside optocoupler 4N33. The same BCD outputs from IC5 are also connected to the BCD-to-7-segment decoder to display the step number on a 7-segment display.
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