| 摘要 |
<p>An easy-to-produce chip variable resistor in which the resistance can be held reliably at an adjusting value. An insulating board is provided with a through hole through which a driver can be inserted and a resistor film is formed on the upper surface of the insulating substrate to surround the through hole. A disc-like rotor is laid on the resistor film through a spacer made of an insulating material. The rotor is held from the outside by means of a holding member made of a metal plate. The spacer is cut such that the contact part of the rotor is exposed downward to touch the resistor film. Since the rotor is surrounded by the holding member from the outside, the resilient force of the holding member can act strongly on the rotor. Consequently, the resistance can be held reliably at an adjusting value.</p> |
