发明名称 |
Vertical ramp generator for a television receiver |
摘要 |
A ramp generator is described for developing a ramp voltage for use in vertically deflecting the electron beam or beams of a television receiver. The ramp generator receives a vertical rate pulse developed by the receiver for developing a charging current during the occurrence of the vertical rate pulse. A discharging current is also generated, and both currents are applied to a capacitor for developing a ramp voltage which increases and then decreases in amplitude. A clamp circuit in the generator is enabled when the vertical pulse is received for clamping the ramp voltage on the capacitor to a predetermined peak voltage via low impedance path such that unwanted voltage components are substantially eliminated from the ramp voltage during the clamping action.
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申请公布号 |
US4322664(A) |
申请公布日期 |
1982.03.30 |
申请号 |
US19800184718 |
申请日期 |
1980.09.08 |
申请人 |
ZENITH RADIO CORPORATION |
发明人 |
BART, STAN;TZAKIS, GEORGE J. |
分类号 |
H03K4/50;H03K4/502;(IPC1-7):H01J29/70;H01J29/76 |
主分类号 |
H03K4/50 |
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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