Adjustable thermostat controller circuit diagram created REF01E

An adjustable thermostat controller circuit is widely used in everyday applications, such as for maintaining a constant temperature in soldering irons. The circuit utilizes the TMP17 sensor along with the REF01E voltage reference to ensure a stable 10V supply voltage. The measured voltage signal across resistor R1 is proportional to the temperature (t). The AD790 voltage comparator is employed to compare the measured temperature (t) with a set temperature (t0). When the measured temperature equals the set temperature, the thermostat output becomes low.

The adjustable thermostat controller circuit is designed to maintain specific temperature levels in various applications. The TMP17 temperature sensor plays a crucial role by providing accurate temperature readings. The REF01E serves as a precision voltage reference, ensuring that the circuit operates with a consistent 10V supply, which is essential for reliable performance.

Resistor R1 is strategically placed to convert the temperature reading from the TMP17 into a proportional voltage signal. This voltage signal is then fed into the AD790 voltage comparator, which functions as a threshold detector. The comparator compares the voltage corresponding to the measured temperature (t) against a predetermined set temperature (t0).

When the measured temperature reaches the set point, the output of the AD790 transitions to a low state, signaling that the desired temperature has been achieved. This output can be used to control heating elements, such as those found in soldering irons, by turning them off or on as needed to maintain the set temperature.

In summary, this adjustable thermostat controller circuit combines a temperature sensor, a precision voltage reference, and a voltage comparator to create an efficient and reliable temperature control system suitable for various applications, particularly in soldering and other temperature-sensitive processes.Adjustable thermostat controller circuit is very long use in everyday life, such as constant temperature soldering iron, as shown in FIG. TMP17 by the REF01E to provide a high degree of stability 10V supply voltage across the resistor R1 can be obtained with the measured voltage signal proportional to the temperature t. AD790 voltage comparator. Order t, t0 represent the measured value and the set value of the temperature, when t t0 when the thermostat output is low, t