Circuit Project Electronic

Figure 1 shows a schematic diagram of the Ion Detector–a rather simple circuit consisting of three transistors (two PN2907 PNP, and a single PN2222 NPN type), three resistors, one capacitor, an antenna, a mA meter, and an Led. In that circuit, a telescoping antenna is used as the pickup. In the presence of an ion field, ions accumulate on the antenna, causing a minute negative current to flow to the base of Q1.

Read more original source:
http://www.uoguelph.ca/~antoon/circ/hv/niondet/niondet.html

This entry was posted on Monday, June 30th, 2008 at 10:23 am and is filed under high voltage power supply. You can follow any responses to this entry through the RSS 2.0 feed.