Making A Transistor Radio by George C. Dobbs

By George C. Dobbs

With tremendous color diagrams and an both effortless to keep on with textual content, this interesting booklet exhibits tips on how to make a transistor radio in a position to receiving a couple of stations.

First to be defined is an easy crystal set that truly works. level by means of level the set is extra to (each degree is an entire operating radio) till a strong transistor radio is completed.

Easily, inexpensively, and studying as you move, as each one part is additional you'll event the joys, shared via all radio constructors, of hearing sounds coming from a radio receiver that's your personal paintings.

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Extra resources for Making A Transistor Radio

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3) The designed dv/dt value must always be equal or lower than the dv/dt value found from the datasheet. 7 A typical snubber circuit. 6 Series and Parallel Connection of Power Diodes For specific applications, when the voltage or current rating of a chosen diode is not enough to meet the designed rating, diodes can be connected in series or parallel. Connecting them in series will give the structure a high voltage rating that may be necessary for high-voltage applications. However, one must ensure that the diodes are properly matched especially in terms of their reverse recovery properties.

5a The circuit. 6 The current waveform. 5 Snubber Circuits for Diode Snubber circuits are essential for diodes used in switching circuits. It can save a diode from overvoltage spikes, which may arise during the reverse recovery process. A very common snubber circuit for a power diode consists of a capacitor and a resistor connected in parallel with the diode as shown in Fig. 7. When the reverse recovery current decreases, the capacitor by virtue of its property will try to hold the voltage across it, which, approximately, is the voltage across the diode.

Lai, C. K. Tse, “On driving techniques for LEDs: toward a generalized methodology,” IEEE Trans. Power Electronics, vol. 24, no. 12, pp. 2967–2976, December 2009. Section I Power Electronics Devices This page intentionally left blank 2 The Power Diode Ali I. D. 4 Diode as a Switch.................................................................................... Properties of PN Junction ........................................................................ Common Diode Types .............................................................................

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