Device for testing transistors "PPT".
Instruments for adjusting and controlling the PTA.Since 1982, the device for testing transistors "PPT" has been produced by the Kursk plant "Mayak". The device makes it possible to check all parameters of low and medium power transistors. PPT makes it possible to detect a malfunction of the transistor soldered in the circuit. PPT defines: For low and medium power transistors: DC gain p. Collector reverse current Jko. For high power transistors: To make a comparative assessment of the gain of different transistors. Determine the reverse collector current Jko for transistors for which the Jko current does not exceed 100 μA. The error in determining the DC gain is no more than 50% of its nominal value. The measurement error can be reduced to 5% by connecting an external power source with the voltage specified in the passport for the tested transistor. The error in determining the reverse current of the collector Jko meets the requirements of TU for the device no more than +5 μA. The PPT is powered by a 3336U battery with a voltage of 4.5 V. The price of the device is 20 rubles 80 kopecks.
