Voltage and Phase Angle Measurements on the AZ-58 RF Oscillator
| 1958 Allied Industries rf oscillator, Scoon booster amplifier, AAA Productions Ultimate B-3 Sweep/Function Generator or Heathkit IG-5218 Sine/Square Wave Generator, and 4" diameter Handheld Phanotron Plasma Tube from Bill Cheb | ||
| 58-01 | Plasma Tube Voltage (Vpt) vs. 812 Triode Anode Voltage (Van) @ 50 ns/div, DC coupled | f r = 4.413 MHz, Vpt = 696 Vpp, Van = 2.06 kVpp, 1.13 kVdc |
| 58-02 | Plasma Tube Voltage (Vpt) vs. 812 Triode Anode Voltage (Van) @ 50 ns/div, AC coupled | f r = 4.386 MHz, Vpt = 704 Vpp 0 deg (249 Vrms 0 deg), Van = 2.10 kVpp +8 deg (743 Vrms +8 deg) |
| 58-03 | Plasma Tube Voltage (Vpt) vs. Tank Coil Voltage (Vtc) @ 50 ns/div, DC coupled | Vpt = 664 Vpp, Vtc = 2.06 kVpp |
| 58-04 | Plasma Tube Voltage (Vpt) vs. Tank Coil Voltage (Vtc) @ 50 ns/div, AC Coupled | f r 4.405 MHz, Vpt = 712 Vpp 0 deg (252 Vrms 0 deg), Vtc = 2.00 kVpp +8 deg (707 Vrms +8 deg) |
| 58-05 | Plasma Tube Voltage (Vpt) vs. Tank Coil Resonant Section Voltage (Vtcr) @ 50 ns/div, DC coupled | Vpt = 688 Vpp, Vtc = 752 Vpp |
| 58-06 | Plasma Tube Voltage (Vpt) vs. Tank Coil Resonant Section Voltage (Vtcr) @ 50 ns/div, AC coupled | f r = 4.496 MHz, Vpt = 712 Vpp 0 deg (252 Vrms 0 deg), Vtcr = 744 Vpp 0 deg (263 Vrms 0 deg) |
| 58-07 | Plasma Tube Voltage (Vpt) vs. 812 Triode Grid Voltage (Vgr) @ 50 ns/div, DC coupled | Vpt = 680 Vpp, Vgd = 114 Vpp, note grid voltage opposite polarity to Plasma Tube/Anode voltages due to feedback portion of tank coil |
| 58-08 | Plasma Tube Voltage (Vpt) vs. 812 Triode Grid Voltage (Vgr) @ 50 ns/div, AC coupled | f r = 4.509 MHz, Vpt = 696 Vpp 0 deg (246 Vrms 0 deg), Vgd = 118 Vpp -180 deg (42 Vrms -180 deg) |
| 58-09 | Plasma Tube Voltage (Vpt) vs. Top of 0.1 ohm Current Sense Resistor @ 100 ns/div, DC coupled | fr = 4.505 MHz, Vpt = 696 Vpp, V0.1 = 42.8 Vpp |
| 58-10 | Plasma Tube Voltage (Vpt) vs. Top of 0.1 ohm Current Sense Resistor @ 100 ns/div, DC coupled | fr = 4.472 MHz, Vpt = 696 Vpp 0 deg (246 Vrms 0 deg), V0.1 = 39.2 Vpp 0 deg |
| 58-11 | Top of 0.1 ohm Current Sense Resistor vs. Bottom of 0.1 ohm Current Sense Resistor @ 50 ns/div, DC coupled - calculate Vrms | fr = 4.541 MHz, V0.1 ~ 0.51 Vrms |
| 58-12 | Plasma Tube Voltage (Vpt) vs. Top of 0.05 ohm Current Sense Resistor @ 50 ns/div, DC coupled | fr = 4.550 MHz, Vpt = 696 Vpp, V0.05 = 27.8 Vpp |
| 58-13 | Top of 0.05 ohm Current Sense Resistor vs. Bottom of 0.05 ohm Current Sense Resistor @ 50 ns/div, DC coupled - calculate Vrms | fr = 4.587 MHz, V0.05 ~ 0.45 Vrms |
| 58-14 | Plasma Tube Connector w/No Plasma Tube (Vnpt) vs. 812 Triode Anode Voltage (Van) @ 50 ns/div, DC coupled, Tuning Capacitor set to max (full CW) ~ 15 pF | fr = 5.076 MHz, Vnpt = 740 Vpp 0 deg (262 Vrms 0 deg), Van = 2.52 kVpp 0 deg (891 Vrms 0 deg), 1.26 kVdc |
| 58-15 | Plasma Tube Connector w/No Plasma Tube (Vnpt) vs. 812 Triode Anode Voltage (Van) @ 50 ns/div, DC coupled, Tuning Capacitor set to mid position ~ 193 pF | fr = 4.184 MHz, Vnpt = 1.12 kVpp 0 deg (396 Vrms 0 deg), Van = 2.90 kVpp 0 deg (1.025 kVrms 0 deg), 1.24 kVdc |
| 58-16 | Plasma Tube Connector w/No Plasma Tube (Vnpt) vs. 812 Triode Anode Voltage (Van) @ 50 ns/div, DC coupled, Tuning Capacitor set to min (full CCW) ~ 408 pF | fr = 3.356 MHz, Vnpt = 1.28 kVpp 0 deg (453 Vrms 0 deg), Van = 2.74 kVpp 0 deg (969 Vrms 0 deg), 1.46 kVdc |
| 58-17 | Plasma Tube Voltage (Vpt) vs. 812 Triode Anode Voltage (Van) @ 50 ns/div, DC coupled, Tuning Capacitor set to max (full CW) ~ 15 pF | fr = 4.433 MHz, Vpt = 720 Vpp 0 deg (255 Vrms 0 deg), Van = 2.00 kVpp 7.5 deg (707 Vrms 7.5 deg), 1.11 kVdc |
| 58-18 | Plasma Tube Voltage (Vpt) vs. 812 Triode Anode Voltage (Van) @ 50 ns/div, DC coupled, Tuning Capacitor set to mid position ~ 193 pF | fr = 3.633 MHz, Vnpt = 760 kVpp 0 deg (269 Vrms 0 deg), Van = 1.86 kVpp 6.8 deg (658 Vrms 6.8 deg), 1.12 kVdc |
| 58-19 | Plasma Tube Voltage (Vpt) vs. 812 Triode Anode Voltage (Van) @ 50 ns/div, DC coupled, Tuning Capacitor set to min (full CCW) ~ 408 pF | fr = 3.058 MHz, Vpt = 940 Vpp 0 deg (332 Vrms 0 deg), Van = 1.92 kVpp 5.4 deg (679 Vrms 5.4 deg), 1.20 kVdc |
| 58-20 | Plasma Tube Voltage (Vpt) vs. Audio Input Voltage, No Audio Input (Vnau) @ 100 ns/div, voltage due to feedback from tank coil | f r = 4.630 MHz, Vpt = 740 Vpp, Vnau = 47.2 Vpp |
| 58-21 | Audio Input Voltage (Vau) vs. Grid Voltage (Vg); Audio Input = Ultimate B3 adjusted to 1.00 kHz, AZ-58 modulation input pot adjusted to 1/2, No high voltage | fau = 999.6 Hz, Vau = 60.0 Vpp square wave, Vgd = 58.4 Vpp square wave with moderate droop |
| 58-22 | Audio Input Voltage (Vau) vs. Grid Voltage (Vg); Audio Input = Ultimate B3 adjusted to 1.00 kHz, AZ-58 modulation input pot adjusted to max, No high voltage | fau = 1.001 kHz, Vau = 62.4 Vpp square wave, Vgd = 77.6 Vpp square wave with significant droop |
| 58-23 | Audio Input Voltage (Vau) vs. Grid Voltage (Vg); Audio Input = Heathkit Sine Wave Generator adjusted to 1.0 kHz, AZ-58 modulation input pot adjusted to 1/2, No high voltage | fau = 1.000 kHz, Vau = 56.0 Vpp sine wave, Vgd = 40.8 Vpp significantly distorted sine wave |
| 58-24 | Audio Input Voltage (Vau) vs. Grid Voltage (Vg); Audio Input = Heathkit Sine Wave Generator adjusted to 1.0 kHz, AZ-58 modulation input pot adjusted to max, no high voltage | fau = 1.000 kHz, Vau = 56.0 Vpp sine wave, Vgd = 55.2 Vpp sine wave; note to leave this always adjusted to max.for sine wave |
| 58-25 | Plasma Tube Voltage (Vpt) vs. Audio Input Voltage (Vau) @ 250 us/div, Audio Input = Heathkit Sine Wave Generator adjusted to 1.0 kHz, AZ-58 modulation input pot adjusted to max | f r ~ 4.5MHz, Vpt = 784 Vpp, Vau = 156 Vpp, note burst frequency ~ 1.0 kHz, which occurs as adjust audio level to 100% modulation |
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