The EL2008 datasheet, which is also applicable to the EL2009, states: DRIVING "INDUCTIVE LOADS":
To prevent damage to the EL2008 when the output kicks beyond the supplies it is recommended that catch diodes be placed from each supply to the output. So a pair of fast Schottky diodes from the output to the supply rails is a good idea, too. Reverse-biased, of course, and rated over 2A. (40V is enough). It is worth to keep in mind the warnings described in the "CAPACITIVE LOADS" section of this datasheet, when driving purely capacitive loads (such as driving piezos or MOSFET gates directly without a gate driver chip). The solution to this is simple: a single resistor or an RC snubber, but you have to remember about adding them externally when driving such peculiar loads. The "OP AMP BOOSTER" section is not applicable to your simple FG buffer, because you do not have any op-amps in it. The only advantage of adding an op-amp to the EL2009 is that you can get more output voltage than your FG can output. Watch this video if you ever want to play with op-amps.
« Last Edit: 2016-12-09, 16:46:09 by verpies »
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Topic: Controller No5 With Protection - Looking for Explosions (Read 231475 times)
