xaos wrote: > Hello Everyone, > > I have been running simulations of different parts of the Fury Interface > board. > > Here are the results so far. > > http://www.darksmile.net/ee/index.html > > Your feedback is most welcome. > > -George > > George
A more versatile EFC circuit that allows independent adjustment of EFC span and offset is possible if an additional opamp is used. A 2x differential amplifier translates the Fury EFC output to either {-10V, 0V] or [0V, +10V] depending on its input connections, a second opamp inverts a +5Vreference to produce a -5V source offset source, and a third opamp configured as an inverting opamp scales the EFC range and adds it to the offset to produce the required EFC range to suit the OCXO in use. An OCXO EFC range anywhere between -10V and + 10V can be accommodated by selecting a couple of resistors combined with a set of jumpers. If you want the circuit schematic I can produce it by around 1300 UTC tomorrow. Bruce _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.