Elecraft DL1 Diode Vf versus Voltage

Voltage measurements at 1 dB steps from 0 to 11 dB



DG1032 Function Generator



Elecraft DL1 Diode Vf at 5.5 Watts

Matched 1N5711 devices

KX3 Power=10W
DL1 1N5711 V out=11.42V
Added 1N5711 V out=23.08V
(11.42 + Vf) * 2=23.08 + Vf
Vf=0.24

Measuring AT1 Attenuation Steps using XG3 RF Signal Source

AT1 StepMeasured Attenuation
10.972 dB
33.004 dB
66.195 dB

Attenuator Components
2.6 dB9.5 dB



Heathkit IM-105 Verification

  • Rigol DG1032z: 10kHz, 2.5 Vrms, 50Ω = 0.125W
  • DL1 output = 1.5844Vdc
  • DL1 P = (1.5844 + 0.175)^2 / 25 = 0.124W