The Concertina (or Cathodyne) Phase Splitter (CPS)
The CPS (concertina phase splitter = cathodyne) is presented in this chapter. It includes all relevant equations that allow calculating gains, input and output resistances, gain stage transfer functions, and all noise aspects of the gain stage. Additional
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The Concertina (or Cathodyne) Phase Splitter (CPS)
Contents 10.1 Circuit Diagram ............................................................................................................ 10.2 The CPS in Balanced Operation: Basic Formulae...................................................... 10.2.1 The Idle Gain G0.bal (Output Un-loaded) ...................................................... 10.2.2 The Output Load Dependent Gain Gbal (RL) ................................................ 10.2.3 The Operating Gain Gops (Output Loaded) ................................................... 10.2.4 The Input Resistance Ri, Input Capacitance Ci, and Input Impedance Zi(f).............................................................................. 10.2.5 The Balanced Output Resistance Ro.bal and Output Impedance Zo.bal(f) ..... 10.3 The CPS in Un-balanced Operations: Basic Formulae............................................... 10.3.1 The Idle Gain G0.c via Cathode Output......................................................... 10.3.2 The Idle Gain G0.a via Anode Output ........................................................... 10.3.3 The Cathode Output Resistance Ro.c ............................................................. 10.3.4 The Anode Output Resistance Ro.a ................................................................ 10.3.5 The Gain Gc(RL.c) via Cathode Output ......................................................... 10.3.6 The Gain Ga(RL.a) via Anode Output ............................................................ 10.4 Derivations .................................................................................................................... 10.4.1 Balanced Mode Gains..................................................................................... 10.4.2 Balanced Mode Output Resistance ................................................................ 10.4.3 The Input Capacitance and Input Impedance ................................................ 10.4.4 The Output Capacitance Co.bal and the Output Impedance Zo.bal(f)............. 10.4.5 Un-balanced Mode Gains and Output Resistance ......................................... 10.5 Frequency and Phase Response Calculations.............................................................. 10.5.1 Gain Stage Input Transfer Function............................................................... 10.5.2 Gain Stage Output Transfer Function ............................................................ 10.5.3 Fundamental Gain Stage Phase Shift............................................................. 10.5.4 Gain Stage Operational Transfer Function .................................................... 10.6 SN Calculations ............................................................................................................ 10.6.1 Input Noise Voltages ...................................................................................... 10.6.2 Cathode Resistor Noise Voltages................................................................... 10.6.3 Anode Re
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