Circuit diagrams and schematics - Electronic projects

Today I seeks Negative power supply units Circuit 9Volt sizes give friends. See in rows think ? circuit character resemble with positive voltage supply the other only get back to the direction of the electricity only. When use Transistor 2SC1061 or TIP31 as a result give current about 1A and Transformer must have 1Amp size [...]

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 [...]

The design of the Negative-Ion Generator is fairly straightforward (see Fig. 1). The circuit is a high voltage generator. It contains a standard 555 timer that’s used to generate square-wave pulses. The pulses are applied to the base of the TIP120 NPN Darlington transistor. The Darlington provides sufficient current to the base of the 2N3055 [...]