1Overview
The Model 507 and Model 508 are legacy current pulsers from the Directed Energy Division. They share a common role, delivering controlled current pulses into low-impedance loads, but cover different ranges of pulse width, repetition rate, and compliance voltage.
The Model 507 produces wide current pulses, from 100 µs to 100 ms, with a high current slew rate above 2.5 A/µs into a compliance of 44 V, at repetition rates from DC up to roughly 1 Hz. The Model 508 produces faster pulses at a lower compliance of 20 V or less, with pulse widths from 5 µs to 100 s, repetition rates from 0.01 kHz to 100 kHz, and a rise time of 550 ns at 6 A into a 150 ohm load.
Directed Energy, Inc. is now a division of Berkeley Nucleonics. Both pulsers ship from the same San Rafael, California build with one support path.
2How It Works
Both models regulate current into a load and take their pulse timing from an external trigger. The Model 507 favors wide, high-slew current pulses into a higher-voltage compliance, which suits slowly repeated, large-charge pulses. The Model 508 favors faster, lower-voltage pulses across a broad span of repetition rates and pulse widths.
3Specifications
The figures below are preliminary and reflect the product summary only. Values not listed are not yet confirmed.
| Parameter | Model 507 | Model 508 |
|---|---|---|
| Pulse width | 100 µs to 100 ms (verify) | 5 µs to 100 s (verify) |
| Repetition rate | DC to ~1 Hz (verify) | 0.01 kHz to 100 kHz (verify) |
| Compliance voltage | 44 V (verify) | ≤ 20 V (verify) |
| Current slew rate | > 2.5 A/µs (verify) | — |
| Rise time | — | 550 ns at 6 A into 150 Ω (verify) |
4Output Protection & Safety
As with all Directed Energy Division current pulsers, the Model 507 and Model 508 must be operated within their safe operating area. The SOA defines the allowed combination of current, pulse width, and repetition rate that keeps the pulser and the connected load within thermal and electrical limits.
5Control & Interfaces
Both models take pulse timing from an external trigger and set output current from a control input. Complete connector and control detail will be confirmed against the published datasheet.
6Applications
The Model 507 and Model 508 suit current pulsing of low-impedance loads where a specific pulse-width and repetition-rate range is needed:
- Model 507. Wide, high-slew current pulses into a 44 V compliance for slowly repeated, large-charge applications.
- Model 508. Faster, lower-voltage current pulses across a broad span of repetition rates and pulse widths.
- Laser diode and low-impedance loads. Controlled current delivery for diode drive and component test.
7Ordering Information
| Part number | Description |
|---|---|
| Model 507 | Wide-pulse, high-slew current pulser, 44 V compliance (preliminary) |
| Model 508 | Fast, low-voltage current pulser, wide rate and width range (preliminary) |
Contact
For a quote, configuration help, or application support, reach the Berkeley Nucleonics team.
Email: info@berkeleynucleonics.com
Phone: 800-234-7858