Zenith-Radio-Corp-6CT41Z1 电路原理图.pdf

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1、VOLUME R-20, MOST-OFTEN-NEEDED 1960 RADIO SERVICING INFORMATION _ _ This transistor portable chassis is a conventional superheterodyne receiver. This chassis has a conver- Kter to produce the 455 Kc intermediate frequency. The J - firat and second intermediate frequency amplifiers are conventional.

2、A ( 103-19) XI diode acts ap a variable R.F. load across one half of the primary of the 1st I.F. transformer, thus preventing overload on strong sig- CHASSIS 6CT41Z1 nals. On strong signals the AVC voltage is increased rZTTi and is fed to the base of the 1st I.F. amplifier, this MODEL ROYAL 675 tend

3、s to reduce I of the lst I-F- As Ic decreases Ec (Continued on page 184,over) in the lst !-F. rises and approaches that of Ec imthe converter. When this occurs, XI begins to conduct and loads down the lst I.F. transformer. CHASSIS 6CT41Z1 MODEL ROYAL 675 (Continued on page 184,over) moiE TO-ifc 1= as S S = r| *5 c-* . ;5Sf i o (?) m Mi 0l| 10 s g = o U i y* ia 1 lls g o 2 J JU H 183 收音机爱 好者资料库 RadioFans.CN VOLUME R 20, MOST-OFTEN NEEDED 1960 RADIO SERVICING INFORMATION 184 收音机爱 好者资料库 RadioFans.CN