This is a logic test pen. You can measure the level without using a multimeter. It is convenient and quick.
1>. Medium size, suitable for handheld
2>. Elastic probe, easy to measure
3>. DuPont line power supply, development board, learning board necessary tools
4>. Three states show: high, low, high resistance (disconnect)
High and low level (VCC=5V):
Red light (high level) - more than 2.4V
Green light (low level) - 0.6V
Blue light - 0.6-2.4V or disconnect
|1||Name||Logic test pen|
|4||Size||15mm x 102mm|
|5||Supply voltage||5V or 3.3V|
5V power supply
(0V< low level <0.6V, 0.6< high resistance <2.4V, 2.4V< high level)
3.3V power supply
(0V< low level <0.39V, 0.39< high resistance <1.49V, 1.49V< high level)
|1||Logic test pen||1||Piece||Solderless pin|
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