Thyristor volt ampere characteristic tester model: DBC-025

Introduction to thyristor volt ampere characteristic tester
This tester complies with the national standards GB4023-83 "Testing Methods for Semiconductor Device Rectifiers" and GB-4024-83 "Testing Methods for Semiconductor Reverse Blocked Three pole Thyristors", and can test various parameters such as VDSM, VRSM, VDRM, VRRM, IDSM, IRSM, IDRM, IRRM of thyristors (KP, KK, KA, KS) and thyristor modules, as well as VRSM, VRRM, IRSM, IRRM of various rectifier diodes (ZP, ZK).
IGBT、 Semiconductor devices such as field-effect transistors, rectifier bridges, solid-state relays, optocouplers, etc. can all be tested. The circuit design is simple and refined, controlled by a microcontroller, and has the characteristics of small size, light weight, simple operation, accurate testing, reliable protection, and convenient maintenance. It is an ideal specialized testing equipment used by semiconductor device manufacturers, distributors, and whole machine production units such as thyristors, thyristors, and rectifiers to test the volt ampere characteristic (also known as blocking characteristic) parameters of the devices.
Main technical indicators:
1. Peak voltage measurement range: 0-3000V, 0-4500V, 0-6000V, 0-9000V optional, other ranges can also be customized
2. Peak leakage current measurement range: 0-100mA, 0-200mA optional, other ranges can also be customized
3. Peak leakage current protection setting range: 0-99mA, 0-198mA
4. The dedicated LCD oscilloscope inside the machine can observe the waveform of the volt ampere characteristic curve of the dynamic peak voltage and peak leakage current changes
Instrument testing usage method:
1. Check that the high-voltage adjustment knob is turned counterclockwise to zero, turn on the power switch, and connect the tested tube according to polarity.
2. Adjust the various functions of the oscilloscope (light spot position, color, thickness, etc.) to the appropriate state according to personal habits.
3. Set the protection settings to the required leakage current value for protection. The number on the dip switch represents 1mA, which can be set to 99mA. Generally
When measuring room temperature voltage, the protection setting is around 5mA.
4. Place the forward/reverse button in the forward position (when not pressed), slowly adjust the high voltage adjustment knob clockwise, observe the oscilloscope, and when the waveform shows a turning point,
When there is leakage current displayed on the leakage current meter, the voltage at this time is the forward non repetitive peak voltage. Generally, 90% of the non repetitive peak voltage is taken as
Repetitive peak voltage, adjust the voltage to the repetitive peak voltage, and the leakage current at this voltage is the repetitive peak leakage current. Then turn the high voltage adjustment knob
Turn counterclockwise to zero, then place the forward/reverse button in reverse (when pressed), and use the same method to measure the non repeating peak voltage in reverse
Repetitive peak voltage and reverse repetitive peak leakage current. If the leakage current exceeds the protection set value during the testing process, the protection will activate and the protection indicator light will be protected
On, the device automatically disconnects the high voltage applied to the A and K ends of the tested tube. At this time, turn the high voltage adjustment knob counterclockwise to the bottom, and the instrument will automatically reset.
Precautions for use:
The ground terminal of the three wire power plug should be reliably grounded to ensure the safety of the testing personnel.
2. After testing the peak voltage, it is necessary to develop the habit of promptly setting the high voltage adjustment knob to zero. It is forbidden to adjust the protection setting and forward/reverse direction when applying high voltage
It is strictly prohibited to touch the conductive parts of the components with hands during the process to avoid electric shock.
When testing a tube core without a radiator, a certain amount of pressure should be applied to prevent poor internal contact of the tube core, which may cause testing errors or damage due to internal ignition
Tested component.
When testing the voltage resistance of components, it is advisable to avoid detecting protective actions to ensure that the components are not damaged by breakdown.