Repeating Timer 6
The described circuit functions as a temperature-dependent timer, designed to initiate its operation in response to a decrease in temperature. The core component of this circuit is a temperature sensor, which continually monitors the ambient temperature. When the sensed temperature falls below the threshold set by the variable resistor (preset), the circuit triggers the timer.
The variable resistor serves as an adjustable reference point, enabling the user to calibrate the temperature at which the timer activates. This flexibility makes the circuit suitable for various applications, such as frost protection systems, where it is essential to activate heating elements or alarms when the temperature drops to critical levels.
The circuit typically includes additional components such as a comparator, which compares the output of the temperature sensor with the preset voltage level determined by the variable resistor. When the comparator detects that the input from the temperature sensor is lower than the preset voltage, it sends a signal to activate the timer.
The timer may be implemented using a monostable multivibrator configuration, which generates a pulse of a specific duration once triggered. This pulse can then be used to control other devices, like relays or actuators, to perform necessary actions, such as turning on heating systems or notifying users through alarms.
In summary, this temperature-activated timer circuit is an essential design for applications requiring automatic responses to low-temperature conditions, providing both functionality and user-adjustable settings to meet specific requirements.This circuit is the opposite of Repeating Timer No.5. It will only begin to operate if the temperature falls below the preset level. Again - the variable resistor (preset) lets you choose the temperature below which the timer will function.. 🔗 External reference
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