TYPICAL RESULTS
Obtaining meaningful results with the AVR-EB4-B requires care, experience, and an
understanding of diode transient behavior and the impact of inductive and capacitive
parasitics. To assist the user, typical results for commercially available diodes are
provided below. The user should be able to reliably duplicate these results.
1N4937 RESULTS
The On Semiconductor 1N4937 is a 1A, 600V DO-41 fast-recovery rectifier. With the
amplitudes set to +100V and -200V, and with the mainframe connected to the test jig
using a 60 cm coaxial cable, the following reverse recovery waveform is obtained at the
test jig "OUT" terminal:
5 V/div ( = 1 A/div), 20 ns/div.
20%-80% switching time shown.
S/N 11713. 60 cm cable used.
The above waveform shows the transition from a forward current of +2A to a reverse
current of -4A. The reverse transient lasts for approximately 82.75 ns under these
conditions (measured at the 25% reverse current point).
For this test, the 1N4937 was installed as shown below:
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Содержание AVR-EB4-B
Страница 45: ...The next photo shows a MELF device installed between the two pins 45 A MELF packaged Device Under Test DUT...
Страница 57: ...Then open the tan colored DUT socket by flipping forward the two black latches on the front edge of it 57...
Страница 69: ...PCB 158R5 LOW VOLTAGE POWER SUPPLY...
Страница 71: ...PCB 104G KEYPAD DISPLAY BOARD...
Страница 76: ...TEST JIG WIRING AVX TRR HPOST...
Страница 83: ...PERFORMANCE CHECK SHEET 83...