发明名称 |
Circuit for plural lamp control in slide projectors or the like |
摘要 |
Two lamps are controlled in that one is off and the other one on or vice versa with fractural transition from one state to the other being controlled by a differential amplifier with integrated, pulse or trigger switch operated Miller integrator. The differential amplifier control circuit elements (transistors, triacs) in separate circuit paths for the lamps. The control is either a direct one (d.c.) or an indirect one through phase shifting of firing pulses in a.c. operated triacs.
|
申请公布号 |
US4080551(A) |
申请公布日期 |
1978.03.21 |
申请号 |
US19760687681 |
申请日期 |
1976.05.19 |
申请人 |
ROLLEI-WERKE FRANKE & HEIDECKE |
发明人 |
HEILAND, JOACHIM;STILLER, ARMIN |
分类号 |
H05B39/08;(IPC1-7):H05B37/00;H05B39/02 |
主分类号 |
H05B39/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|