User:AJim

I discovered Wikipedia in February 2004, and was delighted with what I found. I am learning how to use these excellent tools and, in the process, trying to make useful contributions to topics where I have some expertise.

I am greatly impressed with the power and potential of a collaborative encyclopedia project. I am proud to be able to make a contribution.

some things to do:
 * relay history - the contributions of Henry and Morse as a coherent development path
 * relay surge - tungsten loads are the worst case, not inductive, fix that application section

despite all that there is in here, there are some important design insights still missing in the transformer article there could usefully be a section on unintended or accidental transformers in the foldback current limit article
 * schmitt trigger - for connecting fast logic to slowly changing signals
 * related discussion of how slow signals might burn up cmos
 * related discussion of logic level definitions and "undefined zone"
 * inverter transfer functions, it is strange these are missing
 * show black-box y=x connection
 * use of some types of logic as hf amplifiers
 * show derivation of bistable solution
 * link to ring oscillator
 * cross coupling, of course, and why twisted pairs and transpositions are used
 * slipped pairs - when twisted pairs are misused
 * why power wires must not be split in conduits - with NEC reference etc.
 * induction inside airplane struck by lightning from the huge skin dI/dT, why all metal parts, such as seats, must be bonded to prevent shock
 * a more general treatment of the generally useful foldback strategy for dealing with overload or saturation
 * and the stragegy of forcing a limit-cycle oscillation for automatic recovery

helpful links

 * Useful templates
 * Navigational templates
 * Find templates
 * Extended image syntax
 * MediaWiki User's Guide: Creating special characters
 * Template:Chem2 chem formulas
 * Template:EqmR chem arrows
 * Blanking sections sometimes violates policies