The PVX series of high voltage pulsers is designed to drive small capacitive loads quickly. There is no rise/fall time adjustment, so if the rise time at the load is too fast for a particular application, a seemingly quick fix might be to place a capacitor across the pulser’s output. However, if we slow down…
Bob Schmid, BNC Technical Support – Current pulsers used in laser applications must generate very sharp pulses with very sharp rising edges. A high speed, narrow pulse with a fast rise time is paramount when driving laser diodes for ranging and digital communications. BNC offers a variety of high current pulsers for use with…
Watch the Video Many inquiries have been made about measuring the output current on the PCO-7114 pulsed laser diode driver modules. In the following article the proper current measurement technique will be explained. In this demonstration the PCO-7114-50-4 will be used and will be tested into a shorted load. The current monitor cable is a…
Watch the Video To measure the output pulse current to the load from your PCO 6131 or the PCO-6141, you will need a Current Monitor assembly. The current monitor contains a current-to-voltage resistor (CVR), also known as a current sense resistor. The use of this accessory board eliminates the uncertainty of the exact current and…
Watch the Video A trigger source sets the pulse frequency. Either the PCO-7810’s internal trigger source, or an external source, can be used. (The width of the pulse is fixed and varies with the model.) Due to power dissipation limits, each model has a maximum specified pulse frequency. Specifically: The PCO-7810-40-4 can output pulses up to 40 A at rates up to 200 kHz, but it requires forced air cooling above…
The output current is controlled by a small DC voltage that can be supplied by either an on-board source (Local Control mode) or by an external source (External Control mode). There are four items associated with setting the output current: I SET three-pin header CURRENT SET pot Current Setpoint input (pin 4 of J2) Output…