23-April-2001
EPR-000008 – 1.2 W Universal Input Non-Isolated TNY254
5 Layout
CAUTION!
This is a non-isolated power supply with the low voltage return referenced to the
input line (85-265 VAC). Do not touch the unit while it is powered. Power the board
using a safety isolation transformer so the high voltage probe return is not referenced
to the neutral of the input line.
For the drain-to-source voltage waveforms connect the high voltage probe tip to jumper JP1
and the probe ground to test point TP1.
For switching current waveforms replace jumper JP1 with a wire loop and use a Tektronix
A6302 current probe and AM503 current probe amplifier (with TM501 power module) or
equivalent.
JP1
TP1
PCB cut out for 6 kV only
Power Integrations, Inc.
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Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
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