[AMPS] HV xfmr and autoranging meters

George T. Daughters gdaught6@leland.Stanford.EDU
Thu, 18 Jun 1998 12:02:57 +0008



hi all

steve wrote...

> I've seen odd resistance measurements with autoranging meters when the
> dV/dt upsets the reading when the range switches; high Z dvms might be
> particularly prone to this.

yes!  i've had one oscillate at about 1Hz or so!  it might need 
nichrome test leads!!     ;>)  [note the smiley thing!!]

> It might be worth using a bench supply and
> running 100mA dc through it.

a reasonable solution, but watch out turning it off!  remember that 
E = L dI/dt
and it can bite you!

73,

George T. Daughters, K6GT

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