
uTracer Tube Tester / Tube Curve-tracer:
- Overview:
- Pulsed measuresment of diodes, triodes, penthodes, etc.
- 13 pre-defined measurements:
- Ia,Is versus Vgrid; stepping Vanode; Vscreen & Vheater constant
- Ia,Is versus Vgrid; stepping Vanode=Vscreen; Vheater constant
- Ia,Is versus Vanode; stepping Vgrid; Vscreen & Vheater constant
- Ia,Is versus Vanode; stepping Vscreen; Vgrid & Vheater constant
- Ia,Is versus Vanode=Vscreen; stepping Vgrid; Vheater constant
- Ia,Is versus Vscreen; stepping Vgrid; Vanode & Vheater constant
- Ia,Is versus Vscreen; stepping Vanode; Vgrid & Vheater constant (positive grid bias mode)
- Ia,Is versus Vanode; stepping Vscreen; Vgrid & Vheater constant (positive grid bias mode)
- Ia,Is versus Vheater; stepping Vgrid; Vanode & Vscreen constant
- Ia,Is versus Vheater; stepping Vanode; Vgrid & Vscreen constant
- Ia,Is versus Vanode, stepping Vg with Vs = UL(Va,k) simulating ultra-linear operation for pentodes
- Ia,Is versus Vgrid, stepping Vg with Vs = UL(Va,k) simulating ultra-linear operation for pentodes
- Ia,Is versus Vanode; stepping Vgrid; Vscreen & Vheater constant; simulating “Schade” feedback
- Plot transconductance (Mutual Conductance) as function of bias
- Plot output resistance as function of bias
- Continuous measurement of magic eyes
- Matching of double-triodes (second anode connected to screen terminal)
- Quick Test feature which measures: nominal currents, Rplate, Gm and mu in a matter of seconds without the need to plot full curves!
Printed report with main parameters!
- Anode and Screen voltage sources:
- 2 to 400 V, resolution 0.4 V
- Simple circuit variant available for low voltage tubes (Click Here)
- Measurement pulse 1 ms
- Nominal output current 200 mA
- A simple circuit mod increases the current to upto 1A !! (Click Here)
- Maximum output power 60 W
- Hardware current limit 250 mA
- Programmable compliance: 25, 50, 75, 100, 125, 150, 175, 200 mA, response time 20 us
- Short circuit proof
- Linear / logarithmic sweep
- Anode and Screen current measurement:
- 0 to 200 mA in 8 ranges with 9.5 bit resolution
- Fully auto ranging or manual range selection
- Auto averaging or manual average selection
- ranges: 0-1 mA, 0-2 mA, 0-5 mA, 0-10 mA, 0-20 mA, 0-40 mA, 0-100 mA, 0-200 mA
- A simple circuit mod increases the current to upto 1A !! (Click Here)
- Grid bias; negative:
- 0 to -50 V, resolution 50 mV
- Protected against short circuits
- Linear / logarithmic sweep
- A small circuit allows you to zoom in for low grid voltages and even positive grid biases and current! (Click Here)
- Grid bias; positive: (more
)
- Triodes only (screen supply is used source)
- 0 to 200 V
- 0 to 200 mA
- Pulsed, so no grid dissipation
- A small circuit allows you to zoom in for low grid voltages and even positive grid biases and current! (Click Here)
- Heater:
- 0 to Vsupl (nom. 19.5 V)
- Higher voltages with external supply
- 1.5 A max, limited by fuse
- Direct and indirectly heated cathodes
- Soft start, 0-100% in 10 seconds
- External power supply can be used for higher voltages or low voltage / high current heaters (more)
- Data representation:
- On screen graphic presentation with cursor function
- Automatic or manual scaling of axis
- 2 to 25 order polynomial fit though data for extraction of transconductance or output resistance
- Store graph to file in bmp format
- Store data in table format (several formats possible)
- Storage of all tube specific measurement settings!
- Many extensions / options available!
- Android App control (Click here)
- Special version for low anode/screen voltages (Click here)
- Small and even positive grid voltages (Click here)
- Test Transistors with the uTracer (Click here)
- Form electrolytic capacitors with the uTracer (Click Here)
- Increase the current range of your uTracer to 1A! (Click here)
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