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A super gadget to test transistors is going in 10 minutes

Electronics
Added 6 comments
Of course you can buy, order in the Middle Kingdom, but do it yourself... Checks transistors of any type, simplicity, reliability and an important factor - budget.

The simplest circuit, 4 elements and a power supply (battery from an old phone 3.7 volts):
A super gadget to test transistors is going in 10 minutes

Transformer with ATX from a computer PSU


Any LED that looks at you

Two resistors per 100 Ohms, one limiting power does not matter, as does the polarity of the LED.
A transistor is inserted into the nozzle, if the LED lights up, then all the Hoods, if it doesn’t light up, it’s not quite Hood, even very ... It is important not to confuse the polarity.

And transistors with reverse conductivity are checked in the same way, only the polarity changes (turn over by a turn). Good luck







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6 comments
+2
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I use this on a blocking generator since the time of MP transistors. A transformer from a small-sized receiver, a generation frequency of 1000 Hz, an audible alarm.
Convenient for determining the conductivity and pinout of transistors. You can check transistors without soldering.
You can check mosfet and field workers. If you put a variable resistor R2 with a scale, you can evaluate the gain.
Author +1
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Can patent it? Hardly anyone thought of a patent?
+1
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Quote: Ivan_Pokhmelev
It can be even simpler, without the most expensive part (transformer). For example, in such ways:
1. The simplest low-frequency generator based on two transistors is assembled, only instead of one of them we put sockets for the transistor under test.
2. Even easier. The collector of the transistor has a series resistor with an LED and is powered.The base resistor is 1 kOhm and also powered. There is a button between the base and zero.

I’m all shit that I’m getting from China ... a command and I’m taking to Poland a fair
+2
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Transformer options are worth considering for testing without evaporating the transistor from the board.
+1
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It can be even simpler, without the most expensive part (transformer). For example, in such ways:
1. The simplest low-frequency generator based on two transistors is assembled, only instead of one of them we put sockets for the transistor under test.
2. Even easier. The collector of the transistor has a series resistor with an LED and is powered. The base resistor is 1 kOhm and also powered. There is a button between the base and zero.
+5
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Hey. You can sell in China .. they are stunned !!!

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