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NF BA4825/BA4850 bipolar amplifiers
H&H NL series Bipolar power supplies
NF BP4610 bipolair power supply
Cinergia B2C series bidirectional battery charger
Bipolar amplifier.
A bipolar amplifier is distinguished from a ‘normal’ power supply, because it has the ability to operate in multiple quadrants.
The bipolar, two-quadrant model can supply power at positive or negative voltage. A common application is to enhance the output power of an (arbitrary) function generator (quadrant 1 and 2). However, a bipolar two-quadrant model may also be structured so that it is able to supply or dissipate electricity at a positive voltage. Such units are ideal for, for example, charging and discharging batteries or supercapacitors (quadrant 1 and 4).
A four-quadrant bipolar amplifier is capable of both supplying current (power supply) and absorbing current (load). All of which, of course, at both positive and negative voltage. A good example is the control of RCL networks, at which the capacity or coil generates energy back into the power supply when it is disconnected.
In our product range we carry Höcherl&Hackl amplifiers, Toellner, NF Corporation Cinergia, and Newtons4th with power up to 200kVA, voltages up to 750V, but also frequencies up to 50MHz.
Hans Verhees
Victron Energy
We don’t buy measuring instruments, we purchase solutions for specific measurement problems. I like to buy from TTMS, given their knowledge of test solutions in power electronics. I hate sellers. TTMS helps us to make the right choice. They even come up with instrumentation from manufacturers they do not represent themselves. And always with the perfect service: they are not complicated and just arrange what is needed.
Jan Serné
Shell Technology Centre Amsterdam
In my role within the calibration and quality lab, it is a continuous striving for quality for me. In order to ensure this, the right support from, amongst others, suppliers is essential. TTMS understands this like no other, and I have been doing business with them for years. If I need to describe the business relationship with TTMS, it would be that it’s both constructive and instinctive. The measurement instrumentation is reliable. In addition to this, TTMS’ expertise of test and measuring equipment complements the STCA.
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