​how to detect infrared receiving diode?

Last Update Time: 2018-10-26 16:55:08

how to detect infrared receiving diode?

mechanical table for infrared receiving diode detection

the judgment electrode is the same as that for detecting the normal or reverse resistors of ordinary light emitting diodes or diodes.

detection of the ability to receive light. The multimeter is placed in the DC 50 uA block (if the multimeter is used without 50 mu A, and also can be used for 0. 1mA or 1mA), the two form is connected to the two pin of the infrared receiving diode, and then the surface of the measured tube is facing the sun or the bulb, and the multimeter pointer should be moved. According to the connection of red fruit pen, the direction of swinging of multimeter pointer is also different. When the red pen is connected to the positive pole and the black pen is connected to the negative pole, the pointer swings to the right, and the larger the amplitude, the better the performance of the infrared receiving diode: conversely, the pointer swings to the left. If the pointer is not moved after the watch is attached, the performance of the pipe is poor or damaged.

In addition to the above methods, the controller can also be used to complete the multimeter. The multimeter is placed in the RX1k2 gear, the red pen is connected with the positive electrode of the infrared receiving diode, and the black pen is connected with the negative pole. A good color TV remote controller is facing the infrared receiving window of the diode, the distance is 5~10mm. When pressing the remote control button, if the performance of the infrared receiving diode is good and the resistance value decreases, the sensitivity of the measured tube will be higher and the resistance will be smaller. It is very convenient and accurate to select infrared receiving diodes with excellent performance.

use the digital multimeter to detect the infrared receiving diode to block the position of the diode. The pressure drop value should be 0.45~0.65V when the black pen is connected to the negative pole and the red pen is connected to the positive pole. The number should be displayed on the screen after the adjustment of the pen.

For the overflow symbol "OL" or "1".

how to detect the infrared receiver head?

The infrared receiving head is an infrared receiving circuit module, which is usually composed of an infrared receiving diode and an amplifying circuit. The amplifying circuit is usually composed of an integrated block and a number of resistors and capacitors (including a large number of circuits, including amplification, frequency selection and demodulation), and then encapsulated in a single circuit module (shield box). The circuit is complex, and the volume is only comparable to that of a medium power transistor. (1) Characteristics of infrared receiver

The infrared receiving head has the advantages of small volume, good sealing performance and high sensitivity.

The advantages of Ge HSI Kang and so on. So it is widely used in various control circuits and household electricity 8, it only has you.

They are power supply positive pole power supply negative pole (grounding terminal) and signal output. The working voltage is about 5V.

As long as it is supplied to it, it is a complete infrared receiving amplifier. It is very convenient to use, and the common infrared receiver head shape and pin arrangement are shown in figure.

Receiving head

Detect with remote control: the receiver will be inserted into the control circuit in the circuit of receiving head.

When the foot is pressed and the remote control is pressed, the LED should have intermittent flash and no flash is bad. The new element is usually replaced after the damage.