Knowledge link
1. One-way control of silicon
An electric resistance of rx1 is used to measure the reverse of any two inverted steps in red and black pens until a pair with a reading of dozens of om is found, at which point the black pen is the control extreme g, the red pen is the cathode k and the other empty foot is the anode a. At this point, the black pen is taken from the judged anode a and the red pen is still taken from the cathode k. This is a time when the pointer should remain intact. Short-wire short anode a and control polar g at short intervals, at which pointers should turn to the right, with resistance readings of about 10 times. If the anode a takes the black pen, when the cathode k takes the red pen, there is a deviation from the pointer, indicating that the one-way controlled silicon has been punctured。
2. Two-way controlled silicon detection
The one-size-fits-all form was used to block rx1, and the other two sets were used in red and black to measure the reverse and reverse of the resistance, resulting in an infinite number of readings. When a group of dozens of om, the red and black graph of the group takes two steps: the first anode a1 and the control pole g, and the other empty foot is the second anode a2. After the a and g poles have been identified, the positive reverse resistance is carefully measured at the a1 and g poles, with the relatively small reading of the black tablets taking the first anode a1 and the red one taking the control extreme g. The black pen to the identified second anode a2 and the red to the first anode a1 should be free of distortion and be of unlimited resistance. Short-wire a2 and g extremes with a positive trigger voltage for g extremes, with a barrier value of about 10 a2 and a1 units. The a2-g is then cut off and should be kept at around 10 readings. Switches red and black pens, red pens to second anode a2, black pens to first anode a1. The same pointer should not be distorted and the barrier should be infinite. The a2 and g polar poles are again briefly connected with short wires, adding negative-directive trigger voltage to the g polar range, and the resistance between a1 and a2 is about 10. Short lines between a2 and g are then disconnected, and the number should remain constant at around 10. Consistent with the above pattern, the measured two-way controllable silicon tubes are not damaged and the three decorative polarity judgements are correct。
The detection of larger power-controlled silicon tubes requires a string of 1. 5 v dry batteries in a single graph pen to increase the trigger voltage。
