Controller Circuits and Projects (temp., liquid level, speed)

 

Controller Circuits and Projects


DC Motor Speed Control with 4049

DC motor speed control with 4049 (PWM)

This DC motor speed control with 4049, is a circuit that allows varying the speed of small DC motors of 3 or 6 Volts that are often found in toys or small electronic devices.

Water level controller circuit using CD4001

Water level controller circuit using CD4001

This water level controller circuit controls the level of water in a tank. Unlike mechanical controls using a floating buoy, this circuit uses two sensors, an upper sensor and a lower sensor,

Electronic Thermostat Circuit using transistors

Electronic Thermostat Circuit using transistors.

This circuit allows us to control the temperature of a room, turning a heating device On and Off. Very useful in winter and in very cold places.

H-Bridge DC Motor Control Circuit

H-Bridge DC Motor Control circuit

This circuit enables us to apply voltage to a DC motor in either direction (Forward or Backward) ausing a control circuit.

Automatic Water Level Controller Circuit

Automatic Water Level Controller circuit

This circuit ensures that an elevated tank always has enough amount of water. Perfect for 2 or more stories buildings or houses

Differential Temperature Controller (PCB)

Differential Temperature Controller.

This circuit measures the temperature difference between 2 sensors and activates a relay when they are different. It is also possible to detect a temperature change, even when the two measured temperatures are normally different.

Heat control using thermistor and TRIAC

Heat control using thermistor and TRIAC

This Heat control using thermistor and TRIAC circuit, is designed to control the temperature of a room, either by using a heat source such as an electric oven heating element or by using a fan or any cooling device