MIL-PRF-19500P
APPENDIX B
B.5.4 Voltage regulator and voltage-reference diode symbols.
IF ............................................................ Forward current, dc
IR ........................................................... Reverse current, dc
IZ, IZK, IZM, IZSM.................................. Regulator current, reference current (dc, dc near breakdown knee, dc
maximum rated current, dc maximum rated surge current)
VF .......................................................... Forward voltage, dc
VR .......................................................... Reverse voltage, dc
VZ, VZM ................................................. Regulator voltage, reference voltage (dc, dc at maximum rated current)
zz, zzk, zzm............................................ Regulator impedance, reference impedance (small-signal, at IZ, at IZK,
at IZM)
αVZ ........................................................ Temperature coefficient of regulator voltage, temperature coefficient of
reference voltage
B.5.5 Current regulator diode symbols.
IL ............................................................ Limiting current
Ip............................................................. Regulator current
VK .......................................................... Knee voltage
VL........................................................... Limiting voltage
AIP ......................................................... Regulator current variation
VS .......................................................... Regulator voltage
zk ........................................................... Knee impedance
zs ........................................................... Regulator impedance
αIp.......................................................... Temperature coefficient of regulator current
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