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IGBT- and thyristor-based discharge circuits
We offer several discharge circuits on a base of IGBTs or thyristors. By default, the NBU-0808, NBU-1012 and NBU-1508 include both serial and external triggering capabilities. The NBD-0505-PWM was designed for the serial triggering in high power IPL and long pulse Nd:YAG, KTP, Alexandrite laser systems, first of all. All the modules provide simmer current during the interval between pulses.
IGBT-based discharge circuits form quasi-rectangular (NBU-0808 and NBU-1012) or rectangular (NBD-0505-PWM) pulses on a flashlamp using energy stored in an external capacitors bank (usually only a portion of it, i.e. partial discharge method).
The thyristor-based discharge circuit NBU-1508 forms bell-shaped pulses by complete discharge of a relatively small capacitor bank (~100uF). Typical applications are Q-switched Nd:YAG lasers or similar.
NBU-1012 is a general-purpose discharge circuit. It forms quasi-rectangular pulses of ajustable length on a flashlamp.
- Type - IGBT, free discharge
- Flashlamp voltage - up to 1000 V
- Flashlamp current - up to 1000 A
- Pulse width - adjustable, from 50 us to 100 ms
- Max. average power - 2 kW
NBU-0808 is a general-purpose discharge circuit. It forms quasi-rectangular pulses of adjustable length on a flashlamp.
- Type - IGBT, free discharge
- Flashlamp voltage - up to 800 V
- Flashlamp current - up to 1000 A
- Pulse width - adjustable, from 50 us to 100 ms
- Max. average power - 2 kW
The NBU-1508 forms bell-shaped pulses of fixed length on a flashlamp. Typical applications are Q-switched Nd:YAG lasers or similar.
- Type - SCR (thyristor), bell-shaped pulse
- Flashlamp voltage - up to 1500 V
- Flashlamp current - up to 1000 A
- Pulse width - fixed, L and C dependent
- Max. average power - 2 kW
NBD-0505-PWM discharge circuit
NBD-0505-PWM, a PWM-based discharge circuit, forms on a flashlamp true-rectangular pulses of adjustable width. It is intended for use in high power IPL and long pulse Nd:YAG, KTP, Alexandrite laser systems
- Type - IGBT, PWM and free discharge
- Flashlamp voltage - up to 500V / 800V
- Flashlamp current - up to 500A / 800A
- Pulse width - adjustable from 50 us to 100 ms
- Max. average power - 2 kW