For Lost_Bro and others,
Bill Of Material:
1x TEKO 373 metal HF 106x50x26 CF373.
2x BNC-Adapter 90° 50 Ohm, Amphenol B5072A1-ND3G-50
2x Connector BNC male plug bulkhead handle solder panel mount straight
2x Connector BNC female plug bulkhead handle solder panel mount straight
2x isolation pads to isolate the EL2009's from the casing
2x tantalum capacitor 10uF 35V
5x ceramic capacitor 100nF
6x feedthrough capacitor 2nF
2x 50 Ohm inductionfree resistor and/or 100 Ohm multiturn potmeter (for intial adjustment)
4x ferrite beads
4x M3 screws and nuts to mount EL2009 and ground lugs.
2x ground lugs.
The above list is for a 2 channel FG, so if you want only 1 cannel protected, the list can almost be halved.
The number of feedtrought and 100nF decouple capacitors can vary depending on how clean the input voltages are.
I use a separate bulky +/- 24V 7A powersupply set to +/-16v to feed the EL2009's, but variations are of course possible
The EL2009 can withstand a max curent of 1A, so that is minimal needed.
I did not use the mentioned (and drawn) Schottky diodes (from supply voltages to output) as they caused severe oscillations.
Perhaps the used SB240-E3/54 diodes junction capacitance of 170pF is to much.
« Last Edit: 2017-01-04, 14:40:02 by Itsu »