Building on the continued success of our existing component identification and analysis instruments, the DCA75 brings an array of exciting new features for the hobbyist and professional alike. The DCA75 is an advanced new design that features a graphics display, USB communications, PC Software (Latest firmware R0019) and an enhanced component identification library.
The DCA75 supports all the components that the popular Peak Atlas DCA55 supports, but adds plenty more. Components supported include:
- Transistors (including Darlingtons), Silicon and Germanium types. Measures gain, Vbe and leakage.
MOSFETs, enhancement mode and depletion mode types. Measure on-threshold (at 5mA) and approx transconductance (for span of 3mA-5mA).
JFETs, including normally off SiC types. Measures pinch-off voltage (at 1uA) and approx transconductance (for span of 3mA-5mA).
IGBTs (insulated gate bipolar transistors). Measures on-threshold (at 5mA).
Diodes and Diode networks.
LEDs and bicolour LEDs (2 lead and 3 lead types).
Zener Diodes with measurement of zener voltage up to 9V at 5mA.
Voltage regulators (measures regulation voltage, drop-out voltage, quiescent current).
Triacs and Thyristors that require less than 10mA of gate current and holding current.
Stand-alone or with a PC
The instrument can be used stand-alone or connected to a PC. Either way, the DCA Pro will automatically identify the component type, identify the pinout and also measure a range of component parameters such as transistor gain, leakage, MOSFET and IGBT threshold voltages, pn characteristics and much more.
When connected to a PC using the supplied USB cable, a range of low current curve-tracing functions can be performed. Various graph types are available, with more to follow:
- Bipolar transistor output characteristics, Ic vs Vce.
- Bipolar transistor input characteristics, Vbe vs Ib.
- MOSFET transfer function, Id vs Vgs.
- JFET transfer function, Id vs Vgs.
- PN junction I/V curves, forward and reverse options (for Zener diodes).
Curve tracing is performed using test parameters in the range of +/-12V, +/-12mA. All curve-tracing data can be instantly pasted into Excel© for further graphing and analysis. PC Software is included with the DCA Pro on a Peak USB memory stick. Software for Windows XP and 7.
For more information : Peak Atlas Userguide
Atlas DCA55 and DCA75 Comparison
|Feature||Atlas DCA55||Atlas DCA75|
|Display type||16 x 2 Alphanumeric||122 x 32 Graphic|
|Communications||-||USB (Win USB built-in driver)|
|Power supply||1 x GP23 12V battery||1 x AAA and USB power|
|Test Signals Range (typ)||+/-5V, +/-5mA||+/-12V, +/-12mA|
|Test Signal Resolution||10 bits||12 bits|
|Voltage measurement resolution||20mV||3mV|
|Diode / LED support||Yes||Yes|
|Zener diode analysis||-||Yes|
|Voltage regulator analysis||-||Yes|
|JFET pinch-off measurement||-||Yes|
|JFET on-threshold measurement||-||Yes|
|Depletion mode threshold measurement||Yes|
|Saturation voltage measurement||-||Yes|
|Leakage current measurement||Yes||Yes|
|Online upgradeable firmware||-||Yes|
|Online upgradeable PC software||N/A||Yes|
|Sounder||-||Yes (with mute on/off)|
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