DM 821 - FORWARD VOLTAGE MEASURING DEVICE FOR POWER SEMICONDUCTORS
- Measurement of forward voltage and pinch-off voltage of power semiconductors
- Determination of output characteristics and gate transfer characteristic
Features
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- Forward Voltages **VCE**
- 19,2 / 9,6 / 4,8 / 2,4 / 1,2 / 0,6 / 0,3 V
- Load Current **IL**, adjustable in multiples of 0,1 A, range 50 to 10,000 A
- Load pulse width, adjustable in multiples of 1 µs, range 100 to 10,000 µs
- Gate current, adjustable in multiples of 1 mA, range 10 to 5,000 mA
- Gate voltage, adjustable in multiples of 0,1 V, range 1,0 to 20,0 V
Description
The test device DM 821 is used to measure the forward voltage of power semiconductors.
It has been designed for integration into an automatic test system and has neither displays nor manual operating elements. Three LEDs provide information about the operating status of the device. (READY, RUNNING, INVALID).
The DM 821 is controlled via serial interface or via Ethernet (optional).
To determine the forward voltage of semiconductors, the specimen is tested with a load current pulse of up to 10,000 A.
Thereby, the test current is taken out of a capacitor bank within the device.
According to quantity of the test current, a recovery period of max 500 ms is necessary to recharge this unit. After this time, the device is ready for a new test.
The internal current measurement is carried out by shunts.