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preamplifier.php   5330 Bytes    11-12-2014 09:37:05


ELECTRONIC PROJECTS : CETH-60


Preamplifier



Preamplifier




The Preamplifier has been built on a own PCB, because it may have to be replaced (if students try to measure Line Frequency) or it may be useful for other projects.

The Device consumes about 40 mA at 15 V Supply. It consists of two amplifiers and two limiter stages. The gain is about 100 ( 40dB ). Higher gain may result in
oscillation.


Preamplifier

Fig. 1 .:. The 3D View from Target



Preamplifier

Fig. 2 .:. Placement of the parts



Preamplifier

Fig. 3 .:. Input level needed to produce a 2Vpp output. Horizontal unit : MHz







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t1 = 3941 d

t2 = 710 ms

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