Humphry, Ronald Henry <br/><br/>
An experimental course in the fundamental principles of radio / 
R. H. Humphry 
 - London  I. Pitman  1945 
 - x, 197 p.; 
<br/><br/>Simple D.C Experiments (Page-1), Magnetism and Electromagnetism (Page-28), Measuring Instruments : Ammeters, Voltmeters and Ohmmeters (Page-44), Condensers (Page-58), Alternating Current Measurements at Low Frequencies (Page-63), The Characteristics of Valves and Metal Rectifiers (Page-92), Valve Amplifier and Oscillator Circuits at Audio-Frequency (Page-115), Simple Experiments at High Frequency (Page-134), Detection and  Allied Subjects (Page-149), Transmitter Circuits (Page-166), Power Supplies (Page-179), Additional Experiments and Notes (Page-187).    
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio.
<br/><br/><label>Dewey Class. No.: </label>621.384,HUM