Page 40 - Build Your Own Transistor Radios a Hobbyists Guide to High-Performance and Low-Powered Radio Circuits
P. 40
Trimmer Sect A
Main Sect A
Ground
Main Sect B
Trimmer Sect B
FIGURE 3-4 Twin gang/section variable capacitor.
For the twin gang/section variable capacitor, the trimmer capacitors' ground
connection is internally connected to the ground tab, as seen in the figure. The
trimmer-tab connections in general should be tied to each associated main section's
connections (e.g., trimmer section A to main section A and trimmer section B to
main section 8). A detailed description of the second poly-varicon variable capacitor
is provided in Figure 3-5.
