Electronic Projects 12 newsletter

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(AA513)

In this newsletter the principle of sensing an object over a distance is described. An optical sensor (LDR) detects the reflected light emmitted by a LED transmitter.
(AA513)

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Electronic projects 3

Three circuits are explained, a 555 Timer, 555 Oscillator with Light Dependent Resistor (LDR) and a light/dark switch using a LDR and 555 IC. The working of a 555 IC is also discussed. (VB052)

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Product #		VB052
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Electronic projects 5

In this circuit a LM358 IC is used to form two oscillators. The one has a low frequency (1Hz) while the other oscillators at a high frequency (1KHz). The low frequency socillator modules the high frequency to form a two tone siren. (VB056)

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Electronics projects 10

Electronic Key and Lock Circuit's are described, to be built on a WS200 Workstation. (AA262)

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Product #		AA262
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Electronic projects 4

In this newsletter three circuits are explained: a 555 LED flasher, a running light effect using the 4017B and 555 micro chip and an electrodice. (VB054)

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Product #		VB054
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Electronics projects 11

How to buid a night rider light effect on the WS200 Workstation is described. (AA348)

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Electronic projects 2

Two circuits are explained, the first one is a transistor flip-flop circuit with 2 flashing LED's and the second is a coorination test game that uses a thyristor to demonstrate circuit switching. (VB049)

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Skill Level of Item:		(Book)
Product #		VB049
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Electronic Projects 7

The newsletter describes how to construct your own 12V battery tester, the circuit uses a LM358 operational-amplifier as a voltage comparator. (VB062)

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Product #		VB062
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Electronic projects 6

Two circuits are described in this newsletter: a sound switch and a zener diode regulated power supply. (VB058)

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Electronic projects 1

Use of breadboard to build 3 different circuits using LED's and flashing LED's:LED Tester, Flashing LED and 2 Flashing LED's. THe light Emitting Diode (LED) is discussed.(VB044)

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Product #		VB044
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