Products
FF Series
FF Range of Floating Filament Modules
Output 7.5v at 5A ISOLATION TO 30kV
Applications: Mass Spectrometers, Electron Guns, Electron Gun Evaporators, X-Ray Tube Filaments, Power input & control at ground potential
These power supplies use the proven power oscillator from the standard & X-Ray filaments of up to 1.5 ohm (including cable resistance). The filaments can be isolated from ground by up to 30 kV, while power input & all controls remain at ground potential.
Higher isolation voltages are also possible. Please consult the factory for more details.
| Electrical Specification | |
|---|---|
| Input Voltage (at ground potential) | 24V d.c. ±0.5V at 3A maximum. |
| Output Current | 0.8A to 5A at up to +7.5 volt d.c. |
| Control | 0 to +10V gives 0 to 5A, or by internal or external potentiometer |
| Ripple | Less than 200 mV peak to peak, ripple frequency 50 kHz. |
| Load Regulation | Less than 1% for 10% change in filament resistance. The output impedance of the power supply is electronically controlled to maintain the filament temperature as the filament changes |
| Line Regulation | Less than 1% for 0.5V change in 24V. |
| Temperature Co-efficient | 0.1% per °C. |
| Current Monitor (pin 3) | 0 to 10V represents 0 to 5A (accuracy ±5%, source resistance |
| Inhibit (pin 8) | Low = on, high or O/C = off. |
| Operating Temperature | 0 °C to +45 °C. |
| Mechanical Specification | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size |
230 x 120 x 60 mm (5kV, 15kV & 30kV isolation) |
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| Output Cables | Length 1 meter approx | ||||||||
| Pin Connections | As standard HP series with current monitor on pin 3 and on/off on pin 8. | ||||||||
| Order Code Series Code FF |
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