Free Simple Circuit Diagram
LM135/235/335 temperature sensor is designed ease absolute temperature reading, giving all positive value for any frequency, that’s why we read 2.7315V at 0 Celsius degree. To read directly in Celcius, we can use the following circuit: This circuit works by nothing more than providing a 2.7315 voltage reference, so you must connect the meter the sensor output and this reference […]
Read moreThis temperature controller employs an LM135/235/335 temperature sensor, can be used to keep small environment warm or hot. Here is the schematic diagram: LM311 is used as comparator, to detect if the voltage at sensor pin (the inverting input) goes higher than the reference pin (the non-inverting pin). If this condition is detected, the comparator will switch off the heater […]
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This is a temperature measurement circuit using thermocouple. This is a low-frequency application. It will allow the OPA335 to be switched directly into the signal path. This circuit has low noise, high accuracy, and low drift. Here is the circuit : The 4.096-V bridge supply is provided by a precision voltage reference. A negative temperature coefficient of diode D1’s forward […]
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This is a low-current temperature sensors with a single-wire output. The number of pins that needed to interface with a microprocessor is minimized by this circuit because it uses a single-wire output. This circuit can be used in many appplication such as critical µP and µC monitoring, cell phones, networking and telecom equipment, hard drives/tape drives, portable battery-powered equipment, medical […]
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