Temperature Diode Sensor | Electronic Project Circuits

Posts Tagged ‘temperature diode sensor’

Thermal Fan Controller by IC 741 and Diode

The controller uses one or more ordinary silicon diodes as a sensor, and uses a cheap opamp as the amplifier. I designed this circuit to use 12V computer fans, as these are now very easy to get cheaply. These fans typically draw about 200mA when running, so a small power transistor will be fine as the switch. I used a BD140 (1A, 6.5W), but almost anything you have to hand will work just as well.

Read more original source: http://sound.westhost.com/project42.htm

Be the first to comment - What do you think? Posted by admin - October 25, 2008 at 4:15 am

Categories: Detector, Electronic Control Tags: IC741, temperature diode sensor, Temperature-Control

Opto-Thermo Alarm with IC 741 & 4001

The Opto-Thermo Alarm with IC 741 & 4001 is nice circuit,It use IC 741 and IC 4001 for Light detector and Thermo detecto.

Circuit Opto-Thermo Alarm with IC 741 & 4001

Be the first to comment - What do you think? Posted by admin - May 17, 2007 at 11:43 pm

Categories: Audio diagram, Circuit diagram, Lighting, Meter Tags: light alarm circuit, temperature alarm, temperature diode sensor

measurements temperature by diode 1N4148

temperature by diode 1N4148 and IC741.
easy to make and use.
Out to Voltmeter.
*** Low cost too !

When I wants the circuit takes the temperature to are simple. I uses Diode 1N4148 be formed check the temperature. By when feed voltage change it. It is have current flow be stable. When the temperature that Diode, change make Voltage. At it modifies with VR1 and VR2 fine decorate for show that is correct most fining decorates. The important I uses the temperature certainly compare with accurate temple. By compare with reserve 0 the degree Celsius per 0 Volt. For the certainty advises that, should use Digital Voltage Meter. Show well almost forget the important point should. Give power supply Regulator high-quality , such as IC 7815 and IC 7915 etc. Try usable this circuit sees, regard good base of the circuit takes the temperature sir.