| 摘要 |
PROBLEM TO BE SOLVED: To facilitate handling by providing a cover which has a pair of protruding pins electrically connected with a pair of lead portions of a circuit element, in which the circuit element is fixedly disposed, and which has a symbol mark and a constant of the circuit element displayed on the surface thereof. SOLUTION: A pair of lead portions 51 of a circuit element 50 are soldered and fixed to conductive tabs 16A, 16B, respectively, provided on connecting portions of two pole braces 11A, 11B provided upright on a base 13. The pole braces 11A, 11B, the circuit element 50 and the base 13 are covered with a transparent cover 10. A symbol and a pattern 101 displaying the circuit element are printed on the upper surface of the transparent cover 10, and a constant 102 of the circuit element is displayed on the lateral surface in a similar form. Since the same circuit symbol as a practice device circuit symbol is specified on the surface of the cover of the circuit element, an operator may conduct experiment like handling a circuit element on a circuit diagram. Also, since the circuit element is covered with the transparent cover, the circuit element may be obviously and visually recognized, and handling thereof may be facilitated. |
