The PS 501 is a contant-voltage, current-limiting, 0 to 20 Vdc power supply designed to operate in any compartment of a TM 500 Series power module. The PS 501 is a floating power supply in which either terminal may be grounded or floated to 350 Vdc + peak ac. Front panel controls provide continuously variable voltage selection as well as current limiting from 0 to at least 400 mA. Several PS 501s or other suitable supplies can be combined for applications involving complementary circuitry, linear integrated circuits, or any circuitry requiring cascaded DC levels. A ground-referenced +5 V auxiliary supply is included. 20 V floating supply: Voltage range: 0 V to at least 20 V Rated output current: 400 mA Current limit range: ä_10 mA to at least 400 mA Maximum floating voltage: 350 Vdc + peak ac Load effect (regulation): ±1 mV for a 400 mA load Source effect (line regulation): ±5 mV for a ±10% line voltage change Stability: Typically less than 0.1% +5 mV for 8 hours Ripple and noise: ä_0.5 mVp-p with 400 mA load Transient recovery time: 20 µs or less to recover within 20 mV of final output voltage after a 400 mA change in output current 5 V floating supply Output voltage: +4.75 V to +5.25 V ground referenced Rated output current: 1 A Current limit: Non-adjustable and typically 1.5 A to 3 A Load effect (regulation): ±100 mV for a 1 A load change Source effect (line regulation): ±50 mV for a ±10% line voltage change Stability: Typically less than 30 mV (0.5%) for 8 hours Ripple and noise: ä_5 mVp-p with 1 A load
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