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Mini Electronic Choke (MEC)
Designers Menno Vanderveen and Guido Tent decided for
these designs after the positive reception of the E-choke
in 2009. MECs typically fill the gap towards medium
power amplifiers (200mA) and preamplifiers (50mA) where
the E-choke is still to big.
MECs
can replace traditional chokes. Traditional chokes can
have some serious disadvantages:
• high weight
• relatively big size
• magnetic field radiation that induces hum in
the circuit
The MECs
effectively solve all these issues, and offers up to
60dB supply ripple reduction
Technical description & manual
See the background article by Menno Vanderveen:
•
E-choke design (English)
manual
MEC-50
& MEC-100 (pdf-file, NL )
MEC-50
& MEC-100 (pdf-file, UK)
Specifications
Mechanical
Module size: 26*15*15 mm (W*L*H)
Hole pitch: 14 mm (symmetrical). All pin diameters 1.0
mm, pin length 9 mm
Mass: 12 gram
Electrical MEC-50
• maximum DC output current 50 mA
• maximum input Vdc 800 V
• internal current limit 68 mA
• equivalent inductance 78 H
• maximum voltage drop @ Imax 12 V
• short circuit protection: No
• protected for reverse connection: Yes
• maximum heat production 0,6 W
• minimum capacity C1 27 uF
• optimal capacity C1 = C2 47 uF
Electrical
MEC-100
• maximum DC output current 100 mA
• maximum input Vdc 800 V
• internal current limit: no
• equivalent inductance 10 H
• maximum voltage drop @ Imax 9 V
• short circuit protection: No
• protected for reverse connection: Yes
• maximum heat production 0,9 W
• minimum capacity C1 47 uF
• optimal capacity C1 = C2 100 uF
Electrical
MEC-200
• maximum DC output current 200 mA
• maximum input Vdc 800 V
• internal current limit: no
• equivalent inductance 10 H
• maximum voltage drop @ Imax 10 V
• short circuit protection: No
• protected for reverse connection: Yes
• maximum heat production 2,0 W
• minimum capacity C1 100 uF
• optimal capacity C1 = C220 uF
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