The 733 as a low-input-impedance preamplifier for current-division use
نویسندگان
چکیده
منابع مشابه
As a Low - Input - Impedance Preamplifier for Current - Division Use
By grounding the usual inputs of a 733 amplifier chip and driving one of the gain-control pins, one obtains a common-base input stage with an input impedance of about 20 ohms. This can be used as an inexpensive current-division preamp and, in large multichannel systems, will probably not limit the performance. In the current-division method of coordinate measurement one observes the (integrated...
متن کاملA Low Input Impedance MRI Preamplifier Using a Purely Capacitive Feedback Network
R. Oppelt, M. Vester Corporate Technology, Siemens AG, Erlangen, Germany, Medical Solutions, Siemens AG, Erlangen, Germany Introduction: MRI preamplifiers need to meet a number of technical requirements that are not easily to be achieved simultaneously. Major challenges are a low noise figure (e.g. <= 0.5 dB), a stable gain and a high dynamic range. In addition, the small signal input impedance...
متن کاملA Low-Power High-PSRR Current-Mode Microphone Preamplifier
Bionic implants for the deaf require wide-dynamicrange low-power microphone preamplifiers with good wide-band rejection of the supply noise. Widely used low-cost implementations of such preamplifiers typically use the buffered voltage output of an electret capacitor with a built-in JFET source follower. We describe a design in which the JFET microphone buffer’s output current, rather than its o...
متن کاملthe effect of lexical and grammatical collocation instruction through input flooding versus awareness raising on short-term and delayed retention as well a active use
this study attempted to explore if teaching english collocations through two different modes of awareness-raising and input flooding has any possible differential effect on immediate retention as well as retention in a delayed assessment. it also compared the possible differential effect of teaching english collocations implicitly and explicitly on actively using the items in writing. m...
15 صفحه اولLow-noise preamplifier with input and feedback transformers for low source resistance sensors
We describe the design, schematics, and performances of a very-low-noise, low-frequency preamplifier. It operates in the 5 Hz-100 kHz range and offers an input equivalent voltage noise density as low as 65 pV/ ,/I%; the current noise increases with frequency and settles to about 1.5 pA/ @ at 100 kHz. The amplifier uses input and feedback signal transformers and operates in full differential mod...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research
سال: 1982
ISSN: 0167-5087
DOI: 10.1016/0029-554x(82)90111-2