The circuit's components can be assembled onto the two sides of a circular general-purpose board: Connections on the lower surface have been mirrored (a); from the top, component placement is shown in white, and connections are shown in green (b)
Figure 2. The circuit's components can be assembled onto the two sides of a circular general-purpose board: Connections on the lower surface have been mirrored (a); from the top, component placement is shown in white, and connections are shown in green (b)