# Electron beam evaporator with ring cathode power supply

> Original page (HTML): https://vaclab.ru/power_sources/ps_353
> Markdown version: https://vaclab.ru/power_sources/ps_353.md
> Manufacturer: LLC "Laboratory of Vacuum Technologies Plus" (LVT), vaclab.ru

Annular Cathode Evaporator Power Supply

Designed for precision control of thermal evaporation processes in vacuum systems. Provides power for both accelerating voltage and the filament heating channel.


Key Specifications:


- **Output Parameters:** Power up to 3.0 kW, voltage 0.5–3.0 kV, current up to 1000 mA.

- **Stabilization:** Power, current, and voltage regulation modes with accuracy within 2%.

- **Protection:** Overload current limiting and Automatic Reclosure (ARC) after breakdown.

- **Control:** Remote control via RS-485 (ModBus RTU).

- **Design:** 5U 19-inch rack-mount enclosure; 380 V (TN-S) power supply.




Filament Power Features:


- **External Transformer:** Connects directly to the evaporator terminals (10–36 V / 6–40 A).

- **Advantages:** This configuration eliminates the need for long high-current high-voltage cables from the main unit, minimizing losses and simplifying wiring.

## Technical specifications

- Voltage, V: 380 V
- Maximal power, W: 0..3.0 kW
- Interface: RS-485
- Data transfer protocol: MobBus RTU
- Data transfer rate, bps: 9600, 19200, 38400, 57600 bps
- Maximal voltage, V: 0.5..3.0 kV
- Power connection type: TN-S
- Maximal output current, A: 0..1000 mA
- Power stabilization mode: yes
- Current stabilization mode: yes
- Voltage stabilization mode: yes
- 19" rack mount design: yes
- Unit's height: 5U
- Dimensions *(Length x Width x Height),  mm, not more than: 540x485x221mm
- Weight, kg: 20 kg
- Accelerating voltage ripple, no more,%: 5%
- Voltage stability within an hour, not worse,%: 2%
- Overload protection: Current limiting
- Breakdown protection: Disconnection with automatic reclosure
- Voltage: 10..36 V
- Current stabilization, not worse,%: 2
- Power stabilization, not worse: 2%
- Stabilization of the emission current, not worse: 2% (within 10 minutes)
- Current: 6..40 A
- Trasformer type: external
- Independent outputs, pcs: 1