This article introduces a simple infrared remote control circuit tester. The principle of the circuit is easy to understand, also very practical. The depth of understanding of the circuit components are related to your understanding of the circuit, such as you can see and buy these components: SFH2030 .
I use a photodiode, SFH2030 as infrared sensor. A MOSFET opamp CA3140 used to amplify pulse current differential mode from the photodiode. Is a common color leds LED1 will light when the infrared radiation is received. The output of the opamp, pin 6 May be connected to a dc voltage setting multimeter reading. Advantages of infrared remote control can be compared by the meter reading, higher reading infrared light. I in view of the different remote control sensor from 1 meter far, compare the results. For each microamps of current through the photoelectric diode, the generation of about 1 v is output. A 741 or LF351 won't work in this circuit. ? Although I use a 12 v power supply, a 9 volt battery will also work here.
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