Fig. 38.--Three Electrode Vacuum Tube Detector and Battery Connections

Fig. 39.--A and B Batteries for Vacuum Tube Detectors

Fig. 40.--Rheostat for the A or Storage-battery Current

(A) Fig. 41.--Top View of Apparatus Layout for Vacuum Tube Detector
Receiving Set

(B) Fig. 41.--Wiring Diagram of a Simple Vacuum Tube Receiving Set

Fig. 42.--Grid Leaks and How to Connect them Up

Fig. 43.--Crystal Detector Receiving Set with Vacuum Tube Amplifier
(Resistance Coupled)

(A) Fig. 44.--Vacuum Tube Detector Receiving Set with One Step
Amplifier (Resistance Coupled)

(B) Fig. 44.--Wiring Diagram for Using One A or Storage Battery with
an Amplifier and a Detector Tube

(A) Fig. 45.--Wiring Diagram for Radio Frequency Transformer
Amplifying Receiving Set

(B) Fig. 45.--Radio Frequency Transformer

(A) Fig. 46.--Audio Frequency Transformer

(B) Fig. 46.--Wiring Diagram for Audio Frequency Transformer