Controller Circuits and Projects (temp., liquid level, motor speed)
Controller Circuits and Projects
Water Level Controller Circuit using Transistor and Relay
This simple Water level controller circuit is useful to control the water level in a tank. It does this by turning On and Off a water pump depending on the status of the sensors.
Automatic Water Level Controler Circuit
This circuit ensures that an elevated tank always has enough amount of water. Perfect for 2 or more stories buildings or houses
Water level controller circuit using CD4001
This water level controller circuit controls the water level in a tank. Unlike mechanical controls that use a floating buoy, this circuit uses two sensors, an upper sensor and a lower sensor
Differential Temperature Controller (PCB)
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.
Soldering Iron Temperature Controller (TRIAC – DIAC)
Very simple soldering iron temperature control system you can make yourself. It uses very few components. Ideal for DIY projects and circuits
Heat control using thermistor and TRIAC
This circuit is designed to control the temperature of a room, either by using a heat source, such as an electric oven heater, or by using a fan or other cooling device.
Thermistor Controlled Fan Circuit – AC Fan
This circuit varies the speed of a fan plugged into a 110- or 220-volt outlet using only three transistors and a few additional components
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
This circuit allows us to apply voltage to a DC motor in either direction (forward or reverse) using a control circuit.
DC motor speed controller circuit using 555
This simple DC motor speed controller circuit, works with 12 volts and controls a DC motor using the 555 integrated circuit.
DC Motor Speed Control with 4049
This DC motor speed controller allows you to vary the speed of small 3 or 6 volt DC motors often found in toys or small electronic devices.
Dimmer / AC Motor Speed Controller Circuit using TRIAC
A very simple circuit that can be used to control the speed of an AC motor or the level of a room light using a TRIAC.