发明名称 |
Relaxation oscillator integrated circuit having shortable zener diodes for adjusting discharge current |
摘要 |
An oscillator integrated circuit is disclosed in which a predetermined current is reliably established through a discharge transistor by zener zapping appropriate circuit components. In accordance with an embodiment, a plurality of zener diodes are provided in parallel with a plurality of resistors and one or more is shorted out to achieve a predetermined discharge current. In accordance with a second embodiment, the multiplication factor of the discharge transistor is set by trimming its emitters through zener zapping to obtain a predetermined discharge current.
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申请公布号 |
US4670721(A) |
申请公布日期 |
1987.06.02 |
申请号 |
US19860842443 |
申请日期 |
1986.03.21 |
申请人 |
CHERRY SEMICONDUCTOR CORPORATION |
发明人 |
GONTOWSKI, JR., WALTER S.;METRO, JOHN G.;YOLE, STEVEN S. |
分类号 |
H03K3/011;H03K3/0231;(IPC1-7):H03B5/24 |
主分类号 |
H03K3/011 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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