Pulse generators
Pulse generators produce short, precise electrical signals for simulating transient events or for driving high-speed electronic devices. They have a time resolution of up to a nanosecond, with a programmable amplitude of up to ± 100 V and a rise time of less than 1 ns for fast models. In R&D, they are used to characterise logic circuits, semiconductors, optoelectronic components and fast-switching devices. In EMC testing, they reproduce surge pulses or standardised transient peaks (IEC 61000-4-4). Modern instruments offer an adjustable repetition rate from 1 Hz to 100 MHz, with control of pulse width, polarity and trigger delay. Some multi-channel models allow synchronisation of multiple outputs with jitter below 50 ps. USB, LAN and GPIB interfaces ensure automated control and traceability of tests. Stable and robust, these generators guarantee the repeatability and fidelity of pulse signals.
It is a reference tool for simulating, testing and qualifying the transient responses of electronic systems.
practical questions about pulse generators
01
What is a pulse generator used for?A pulse generator produces short, controlled signals - fast edges, isolated pulses or pulse trains - to excite a circuit, check the dynamic response of a component or test the robustness of a system subjected to sudden variations in voltage or current.
02
What's the difference with a function generator?A function generator creates continuous periodic signals. A pulse generator generates very fast edges, precise pulse widths, strictly defined delays and non-periodic shapes. It is designed for transient testing, fast logic and power stages.
03
What are the typical uses in laboratories?Switching tests, validation of logic circuits, triggering of oscilloscopes or instruments, excitation of power transistors, study of transient responses, characterisation of materials or devices sensitive to rise time or pulse width.
04
What technical criteria should you check before choosing one?Rise time, minimum and maximum pulse width, delay accuracy, repeatability, available amplitude, logic compatibility (TTL, CMOS, LVDS), synchronisation capability and overload protection. For fast applications, jitter is a major criterion.
05
Why is time stability crucial for pulse measurements?Pulses are often used as reference or trigger signals. Any variation in delay or edge disturbs measurements, distorts synchronisation or alters the response of a system. Low jitter ensures reliable, reproducible analysis.
