INDEX 



Phototransistor 381 

 Piezo-electric transducers 481, 492 

 Pin-cushion distortion 455, 463 

 Point contact transistor 677 

 Polarization of electrodes 559, 568 



— of load 162 

 Polarized relay 520 



Post deflection acceleration (P.D.A.) 



459 

 Potential divider 



coupling method 151, 156 



made of resistances 7 



partially reactive 34 



Potentiometer 7 



— cam-corrected 485 



— control of power 1 3 



— feeding screened cable 42 



— liquid 486 

 Power 



— amplifier, differential 193 



— amplifier, simple 140, 141 



— in capacitance 27 



— in inductance 58 



— supplies, cold cathode stabilized HT 



586 



— — electronically stabilized HT 587 

 for EHT 597 



for valve heaters 594 



stabilized current 600 



mains 600 



— transfer theorem, maximum 9 



— transformer 65, 68 

 Preferred value system 292 

 Proportional counters 438 



Pulse, square, generating circuits 235 



— transformer 65, 66 



— triangular, generating circuits 239 

 Push-pull 



— power stage 177, 696 



for loads without a centre tap 



194 



— voltage amplifier 1 76 



Q 75,79 



— of acceptor amplifiers 1 99, 202, 205 

 Quartz crystal oscillator 217 



— crystal timer 644 



Rack 327 



Radioactive counting errors 431 

 Rationalization 36 

 Reactance capacitive 27 



— inductive 58 

 Reactivation of dry cells 285 



Real generators 8 



— transformer 64 

 Rectification 



— full-wave 97 



— half-wave 97 



— shunt diode 114 



— smoothed 99 

 Rectifier 316 

 Reference wave 1 1 5 



— tube, voltage 119 



Reflection, through real transformer 64 

 Regulation of power supply 101 

 Rejection ratio 183 

 Relaxation oscillator, difference diode 

 125 



thyratron 129 



Relay 



— circuits 524 



— high speed 519 



— notation 510 



— others 521 



— P.O. 3000 type 512 



— polarized 520 

 Reluctance 54 

 Resistance capacitance 

 band-pass filter 46 



coupling between valves 1 53 



filters with cascaded sections 36 



limited phase shift 43 



high-pass filter 35 



low-pass filter 35 



Resistance thermometer 389 

 Resistors 291 



— carbon composition 291 



— high stability 293 



— variable 294 



— wirewound 294 

 Resonance 



— in signal transformers 81 



— parallel 78 



— series 74 

 Rheostat 13 



Richardson's equation 118,127 

 Ripple estimation 102 

 R.M.S. values 23 

 Running voltage 119 



Sanatron 244 

 Saturated diode 134 

 Saturation 



— due to load polarization 162 



— in swinging choke 104 



— of transformer core 70 

 Scalers 527, 647 



716 



