Model 864A Flashlamp Simmer Supply
The Model 864A Simmer Supply is designed to strike and maintain a low-level current discharge in flashlamps. Initially, the simmer output open circuit voltage rises to a stabilized 1500 V. The simmer trigger output provides an SCR discharge of 520 V at 63 mJ to drive a trigger transformer. When the lamp is struck, the trigger pulses are inhibited and the supply provides a constant current to the flashlamp. Immediately after PFN discharge, the current is boosted automatically to maintain the arc. An external ballast is not normally required.
■ ADJUSTABLE CURRENT TO 500 mA
■ ADJUSTABLE OPEN CIRCUIT VOLTAGE TO 1500 V
■ AUTOMATIC BOOST TO MAINTAIN ARC
■ UP TO 60 W OUTPUT
■ SCR DRIVE FOR TRIGGER TRANSFORMER
■ DIRECTIVE 2011/65/EU (RoHS) COMPLIANT
Specifications:
Input | Voltage | +22 VDC to +32 VDC at 3 A Typical |
Simmer Output | Voltage | Up to 300 V (depending on flashlamp) Flashlamps should be processed for simmer operation |
Open Circuit | Up to 1500 V, ±75 V | |
Current | Up to 500 mA | |
Current Control | Internal multi-turn trimpot | |
Boost Current | Up to 800 mA for 8 ms | |
Enable | +5 V at 10 mA enables simmer, 470 Ω impedance | |
Efficiency | 75% typical including material ballast | |
Simmer Trigger | Voltage | -520 V pulse at 63 mJ |
Pulse Width | ≥1 μs | |
Repetition Rate | Automatic re-strike at ≈30 Hz, if flashlamp is not lit. | |
Temperature | 0° to 70°C, with output current derating. | |
Connections | Input/Output/Power | Molex, 39-01-2101 Mating Molex, 37-01-2100 |
Size Weight |
5.78″ x 3.75″ x 2.03″ 1.41 lbs |
Typical Part Number: 864A = Input Voltage: +22 to +32VDC
Output Current: 500mA
More information:
Model 864A Data Sheet
Model 864A Interface Description