Retractable circuit detection pen

Abstract

The invention discloses a retractable circuit detection pen which comprises a retractable electric rod, a resistance block, an insulating housing, a pen point, a neon bulb and a switch, wherein the retractable electric rod is electrically connected together with the resistance block; the top end of the retractable electric rod is connected with the neon bulb; the pen point is positioned at the bottom of the retractable electric rod; the retractable electric rod is mounted in the insulating housing; the switch is mounted at the joint of the retractable electric rod and the insulating housing; and the neon bulb is in built-up connection with the resistance block. With the scheme, the retractable circuit detection pen provided by the invention is simple in structure and convenient to use, has a retractable pen holder and is portable.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to View More

AI Technical Summary

Benefits of technology

This new type of device with an easy-to-use feature can be used for detecting circuits without having any extra parts or tools attached that make it difficult to carry around them easily.

Problems solved by technology

This patented technical problem addressed in this patents relates to making smaller electronic devices easier for people who want them charging things up quickly without having too much space on their hands.

Images