Technical Hints

Radio Record, Volume III, Issue 11, 27 September 1929, Page 27

Technical Hints

F a valve has a magnification factor of, say, 25, this means that 1 -volt upon the grid will have the same effect as 25 volts upon the plate (and 38 volts upon the grid equal 75 volts upon the plate, ete.). HEN unwinding «a new aerial wire be sure not to allow it to kink or bend sharply, as this will inevitably weaken it. ‘YF you contemplate charging your own accumulators, remember that on no account should this be done with a naked light close to the charging. re you find that your set distorts only after the receiver has been in use fow an hour or two, you can be pretty suive that either the high or low-tension supply is inadequate for the needs of the: receiver, and that the correct and mare economical plan would be to use a larger capacity battery. == pen