Two-key-in-one test pencil
The utility model discloses a two-key-in-one test pencil, which comprises a shell, a circuit board arranged in the shell, a circuit for directly testing voltage and a circuit for testing induced electricity arranged on the circuit board, a testing head arranged at the front end of the shell, keys ar...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model discloses a two-key-in-one test pencil, which comprises a shell, a circuit board arranged in the shell, a circuit for directly testing voltage and a circuit for testing induced electricity arranged on the circuit board, a testing head arranged at the front end of the shell, keys arranged on the shell and composed of a conductive film sleeve and a touch switch. The touch switch is welded and fixed on the circuit board, a normally closed contact of the touch switch is electrically connected with the circuit for directly measuring the voltage, and a normally open contact of the touch switch is electrically connected with the circuit for measuring the induced electricity. A touch switch is arranged at one end, far away from a testing head, of a shell, the touch switch is welded and fixed on a circuit board, a normally closed contact of the touch switch is electrically connected with a circuit for directly testing voltage, and a normally open contact of the touch switch is electrically connected |
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