TRIAC DIAC REVERSING SERVO CONTROL
The circuit described operates a 5-amp reversible series AC motor by utilizing a DC control signal to modulate both speed and direction. The key component in this system is the bidirectional static switch, which allows for the control of AC power to the motor based on the polarity of the incoming DC signal. When the control signal is positive, the motor will rotate in one direction, while a negative signal reverses the rotation.
To achieve variable speed control, a gain potentiometer is integrated into the circuit. This potentiometer alters the slope of the speed versus control voltage curve, providing fine-tuning of the motor’s response to the control signal. By adjusting the potentiometer, the user can set how quickly the motor responds to changes in the control voltage, allowing for smoother acceleration and deceleration.
The circuit may also include additional components such as diodes for protection against back EMF generated by the motor, as well as capacitors to filter noise from the control signals. Proper heat dissipation measures should be considered as well, especially when operating at higher currents, to ensure reliability and longevity of the components involved.
Overall, this system provides a versatile solution for applications requiring precise control of AC motor speed and direction, making it suitable for various industrial and automation tasks.Varies speed and direction of 5-amp reversible series ac motor in accordance with d-c control signal. Polarity of control signal determines direction of rotation. Gain potentiometer adjusts slope of speed versus control voltage curve. -M. P. Southworth, Bidirectional Static Switch Simplifies Ac Control, Control Engineering, March 1964, p 75-76.
🔗 External reference
Related Circuits
Advanced power control systems utilize electronic components such as thyristors for power switching, motor control, and other applications. These systems are involved in inverter design, lamp dimming, and speed control of motors. Triacs are the most commonly used semiconductor...
This weblog discusses electronic circuit schematics, PCB design, DIY kits, and electronic project diagrams. It features a stereo tone control circuit built using the LM1036 integrated circuit (IC). This control circuit adjusts bass, treble, volume, and the balance between...
This circuit design is a sound and light control delay switch for staircase walkway lighting, featuring high voice sensitivity. In the evening, when someone walks on the stairs, their footsteps activate the electronic meter, turning on the lights. If...
The decimal seven-segment storage decoding drive unit 74HC143 provides a constant output for all segments, each at a voltage of 5V and a current ranging from approximately 15mA to 22mA. The BCD data for the seven-segment decoder can be...
PicCon is a PIC microcontroller based radio controller designed for hidden transmitter hunting. When combined with a radio transmitter, it will produce tone sequences and Morse code messages at user-programmed times. It is completely field programmable via DTMF tones,...
This project involves a USB interface for an alphanumeric LCD display, such as the 4x20 model, which can be controlled using the LCD Smartie program. The USB interface is implemented with the PIC18F2550 microcontroller and utilizes USB LCD modules....