TROUBLE WITH VALVES
1. Corrosion of A battery connections. 2. Contacts not tight. 3. Broken wire in filament circuit. 4. Socket contact springs not-mak-ing contact. 5. Filament burned out. 6. Short circuit. 7. Short circuit between A battery leads. Noises 1. Defective valves. 2. Too low a drop in the B battery voltage. 3. C battery voltage below rated figure. 4. Microphonic (humming) valve in detector position. (Try another valve here.) 5. Loud speaker on top or too close to set. (Change its position.) 6. B battery connections loose. 7. C battery connections loose or reversed. 8. Filament rheostat kept too high, 9. Phone cords broken. 10. A battery run down. ill. Loose connections 12. Poor contact on secondary condenser. 13. Secondary condenser shortcircuited. 14. Aerial swinging and touching other objects. 15. Strands in aerial wire broken,
making intermittent contact. IG. Aerial parallel to high voltage linos (such as electric light, telephone, etec.). Punctuating Signals 1. B batteries run down, . 2. i.A battery run down. 3. Loose connections. i. Swinging aerial. 5. Defective grid leak. G. Grid leak of incorrect value.
Permanent link to this item
https://paperspast.natlib.govt.nz/newspapers/MT19261105.2.10
Bibliographic details
Manawatu Times, Volume XLIX, Issue 3497, 5 November 1926, Page 4
Word Count
181TROUBLE WITH VALVES Manawatu Times, Volume XLIX, Issue 3497, 5 November 1926, Page 4
Using This Item
Stuff Ltd is the copyright owner for the Manawatu Times. You can reproduce in-copyright material from this newspaper for non-commercial use under a Creative Commons BY-NC-SA 3.0 New Zealand licence. This newspaper is not available for commercial use without the consent of Stuff Ltd. For advice on reproduction of out-of-copyright material from this newspaper, please refer to the Copyright guide.
Log in