QBU-mini Series Pockels Cell Driver Board QBU-mini-2008
The QBU-mini series is a small, stable, powerful and versatile high-repetition-rate Pockels cell driver board, with bipolar square-wave output up to 3.5kV. It controls Pockels cells using fast-switching high voltage. These modules require a +24V DC supply and a pulse generator to set operating frequency and pulse width. Output voltage can be programmed manually through onboard trimmers or remotely by applying DC voltage to the relevant pins. MOSFET-based QBU technology gives high repetition rates and fast transitions on both pulse edges (<15ns). With adequate forced-air cooling, low load capacitance and low operating voltage, the modules reach 30kHz in continuous mode or 50kHz in burst mode. At full load (3.5kV, 11pF), repetition rate exceeds 8kHz. Common models (original table): QBU-mini-3514 | high-voltage adjustment range 1.4-3.5 kV; QBU-mini-3012 | 1.2-3.0 kV; QBU-mini-2008 | 0.8-2.0 kV; QBU-mini-1004 | 0.4-1.0 kV. Other output voltages are available on request.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Voltage Input | +24VDC |
| Operating Mode | Output triggered by any external TTL signal |
| Voltage, High Level | Adjustable ， up to 3.5kV |
| Voltage, Low Level | Fixed, 0 V |
| Pulse Width | 200ns-∞ |
| Maximum Repetition Rate | >8kHz at full load (3.5kV, 11pF); up to 30-50 kHz and higher at lower load capacitance and voltage |
| Rise/Fall Time | typical:10ns typical |
| Jitter | ~2ns (LJ modification: 1ns) |
| Delay Time | ~150ns (LJ modification: 100ns) |
| Operating Temperature | +10~+40℃ |
| Storage Temperature | -20~+60℃ |
| Humidity [Non-condensing] | 0~90%, non-condensing |
| Dimensions | 140 mm × 50 mm × 20 mm |
| Weight | 0.1kg |
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