OEM Tech Presents New Thyristor-Based Discharge Circuit
OEM Tech has recently developed a new discharge circuit NBU-1508. This thyristor-based module provides up to 1500-V, bell-shaped voltage pulses on a flashlamp and a simmer current between pulses. This device is capable both for serial and external triggering.
Typical applications are Q-switched Nd:YAG lasers or similar.
Features of the NBU-1508 include:
- Flashlamp voltage – up to 1500 V
- Flashlamp current – up to 1000 A
- Includes a built-in simmer supply module and all necessary flashlamp trigger circuits
- Bell-shaped pulse
The NBU-1508 discharge circuit is designed for simplification of solid-state laser systems development. The module utilizes complete discharge of a relatively small capacitor bank (a typical value is 100 µF), which together with an external inductor, forms short (tens to hundreds of microseconds) bell-shaped pulses on a flashlamp and provides simmer current during the interval between pulses.
The flashlamp operating frequency is controlled by +5 V TTL signal from an external control device to the respective pin. The pulse duration is defined by the capacitor discharge time, which depends on the L, C, and flashlamp parameters.
The module includes a thyristor, its driver, protective circuits, simmer and trigger circuits, and controls. It also contains a fan for active cooling.
It’s important to emphasize that the NBU-1508 is not a stand-alone solution. It requires a capacitor charging power supply, an external inductor and capacitor bank, an external control device to start pulses, an external +24 V DC power supply, as well as some minor parts and controls to operate properly.
About OEM Tech
OEM Tech is a full service, customer-oriented developer/manufacturer of specialized power supplies for lasers, electro-optical devices, and other purposes. Founded in 2008, the company quickly established a reputation for its individualized approach, attention to detail, quality, and service. Today OEM Tech supplies clients with thousands of power electronics products annually — ranging from simple to advanced, medical and industrial, standard and customized.
They offer a wide range of high quality products to meet your requirements in the fields of laser electronics:
- Flash lamp pumps: including capacitor charging power supplies, simmer modules and other parts for flash lamp driving
- Diode pumps: including diode drivers both for CW and pulsed laser diodes
- Electro-optics: including a variety of Pockels cell drivers for different applications, from simple Q-switching to more advanced pulse picking and regenerative amplifier control
- RF power solutions: customized medium power RF generator modules
To request more information or a quotation for any OEM Tech products, contact IL Photonics.