Amplifiers
Modular Bipolar Power Supplies AMPR
Digitally Controlled Bipolar (Four-Quadrant) Voltage Sources
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These DC voltage sources combine several multi-channel modules in a single device. The base unit in a 19" case can be equipped with up to 12 power supply modules with 2 or 4 channels each. With up to 48 channels in total, a single AMPR is often enough to supply the entire experiment. The modular design allows for adding or replacing components at any time, making the system adaptable to changing requirements.
The devices provide precise and stable DC voltages for applications involving accelerating or deflecting ions or electrons:
In electron or ion optics, electrodes can pick up charged particles, making their supply voltage unstable. The power supplies AMPR are bipolar (four-quadrant) voltage sources that can source and sink current at any voltage polarity — they keep the electrode potential at a stable level regardless of any ion or electron currents.
In setups with electrodynamic multipoles used as ion guides or mass filters, AMPR is immune against the radio frequency coupled from the multipole to the electrodes.
The output is truly bipolar without any switching — each channel can supply current of any polarity. The devices can seamlessly transition between positive and negative output voltages, including the zero voltage level which behaves exactly as any other output potential. The fast transient load response ensures a stable output even with large capacitive loads.
The outputs are standard SHV connectors, they do not require any special cables or breakout boxes. They are galvanically isolated from the device case and are used for ground sensing. Each channel delivers the desired voltage relative to its output ground, i.e. the shielding of the SHV connector. This makes it possible to achieve a low noise and high DC precision of the electrode potentials.
Typical applications:
Voltage sources for ion or electron optics, control of pulsed voltages for ion storage experiments (in combination with the switches AMXR), voltage sources for QMS or ToF
The devices provide precise and stable DC voltages for applications involving accelerating or deflecting ions or electrons:
In electron or ion optics, electrodes can pick up charged particles, making their supply voltage unstable. The power supplies AMPR are bipolar (four-quadrant) voltage sources that can source and sink current at any voltage polarity — they keep the electrode potential at a stable level regardless of any ion or electron currents.
In setups with electrodynamic multipoles used as ion guides or mass filters, AMPR is immune against the radio frequency coupled from the multipole to the electrodes.
The output is truly bipolar without any switching — each channel can supply current of any polarity. The devices can seamlessly transition between positive and negative output voltages, including the zero voltage level which behaves exactly as any other output potential. The fast transient load response ensures a stable output even with large capacitive loads.
The outputs are standard SHV connectors, they do not require any special cables or breakout boxes. They are galvanically isolated from the device case and are used for ground sensing. Each channel delivers the desired voltage relative to its output ground, i.e. the shielding of the SHV connector. This makes it possible to achieve a low noise and high DC precision of the electrode potentials.
Typical applications:
Voltage sources for ion or electron optics, control of pulsed voltages for ion storage experiments (in combination with the switches AMXR), voltage sources for QMS or ToF
