E.Rodenhuis "Valves for audio frequency amplifiers"

Philips Technical Library, 1954, reprinted and distributed by Audio Amateur Press.

Preface (V)
Chapter I. GENERAL HINTS ON AMPLIFIER CONSTRUCTION (1)
1. Mounting the components (1)
2. Assembly and wiring (3)
3. Summary of general hints (8)
Chapter II. THE VALVES FOR THE VARIOUS STAGES (9)
1. Pre-amplifier valves (10)
2. Phase inverters (11)
3. Output valves (12)
4. Rectifier valves (12)
Chapter III. DESCRIPTION OF THE VALVES EF40, EF86, ECC40, ECC83, EL34, EL84 and GZ34 (14)
EF40, A.F. pentode with low noise level (14)
Valve data of the A.F. pentode EF40 (16)
EF86, A.F. pentode with low noise level (20)
Technical data of the A.F. pentode EF86 (20)
Double triode ECC40 (22)
Valve data of the double triode ECC40 (23)
The ECC40 operated as power valve (26)
The ECC40 as amplifier and phase inverter (27)
ECC83, high-mu double triode (32)
Valve data of the high mu double triode ECC83 (32)
EL34, power pentode (37)
Valve data of the power pentode EL34 (38)
EL84, output pentode (49)
Valve data of the output pentode EL84 (49)
GZ34 high-vacuum full-wave rectifier (59)
Valve data of the high-vacuum full-wave rectifier GZ34 (60)
Chapter IV. HINTS ON PRACTICAL USES OF THE VALVE DATA (63)
Chapter V. COMPONENTS AND CIRCUITS (66)
1. Negative feedback (66)
2. Negative feedback dependent on frequency (67)
3. Tone control (67)
4. The output transformer (68)
5. The input of the amplifier and the volume control (70)
6. Microphones, pick-ups and loudspeakers (72)
Chapter VI. DETAILS OF SOME AMPLIFIER CIRCUITS (79)
1. A 3W GRAMOPHONE AMPLIFIER (79)
Circuit description (79)
2. A HIGH-FIDELITY AMPLIFIER WITH TWO TUBES EL84 IN PUSH-PULL (83)
Circuit description (83)
Measured results (85)
3. A 10W CLASS A AMPLIFIER WITH THE EL34 AS OUTPUT VALVE (93)
Circuit description (93)
Measured results (95)
4. A 15W A.C./D.C. AMPLIFIER WITH TWO VALVES TYPE PL81 IN CLASS B PUSH-PULL CIRCUIT (99)
Circuit description (100)
Measured results (102)
5. A 35W AMPLIFIER WITH TWO EL34 VALVES IN CLASS AB PUSH-PULL (107)
Circuit description (107)
Measured results (110)
6. A 35W QUALITY AMPLIFIER WITH TWO EL34 VALVES IN CLASS AB (115)
Circuit description (115)
Measured results (117)
7. A 70W QUALITY AMPLIFIER WITH FOUR EL34 VALVES IN CLASS AB PUSH-PULL (121)
Circuit description (121)
Measures results (122)
8. A 100W AMPLIFIER WITH TWO EL34 OUTPUT VALVES IN CLASS B (127)
Circuit description (127)
Measured results (130)

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