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The photoelectric cam and groove coupling can constitute coupling circuit and constitute high voltage stabilizing circuit

Source: Notetime: 2013-08-06 10:44:18 click: 2774

  The photoelectric cam and groove coupling can constitute coupling circuit:

  The circuit is as shown in Figure 4. This is a typical AC coupled amplifier circuit. Select appropriately the light emitting circuit current limiting resistor Rl, the current transfer ratio of B4 is a constant, the circuit can ensure the linear amplification.

  The photoelectric cam and groove coupling can constitute high voltage stabilizing circuit:

  The circuit is as shown in Figure 5. The driving transistor uses transistors with higher pressure resistance (figure of the drive pipe is 3DG27). When the output voltage is increased, the bias of V55 is increased, positive current of light-emitting diode B5 is increased, the photosensitive tube interelectrode voltage decreases, the adjustment tube bias voltage is reduced and the internal resistance is increased, reduce the output voltage, and keep the stability of the output.

  Photoelectric cam and groove coupling can be used as a linear coupler.

  Provide a bias current in the light-emitting diode, then the signal voltage to the light emitting diode through a resistor coupled, so the phototransistor receives is optical signal at the bias current increases, decreases, the output current will vary with the signal input voltage linearly. The photoelectric coupler can also work in a switch state, pulse signal transmission. In the transmission of pulse signals, there is a certain delay between input signal and output signal, the delay time of the input time and the output time of different photoelectric cam and groove coupling have big difference.

from:http://www.bauercoupling.com/newsd-nid-54.html