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Unijunction LED flashers

3 years ago 1041
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Description

Two ways to make a single transistor LED flasher.

One using using the (now obsolete) 2N2646 Unijunction Transistor (UJT).

The other using the the (soon to be obsolete) 2N6027 Programmable Unijunction Transistor (PUT).

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Documents

2N2646 Unijunction Transistor (UJT) LED flasher

2N6027 Programmable Unijunction Transistor (PUT) LED flasher

BOM

ID Name Designator Footprint Quantity
1 10k R7 R3 1
2 2k R8 R3 1
3 330 R9 R3 1
4 47u C3 1206 1
5 X2N2646 Q1 TO92 1
6 PULSE(0 9 0 10u) V1 2P-5.0 1
7 LED D1 LED3MM 1
8 Ammeter A1 NONE 1
9 100k R7 R3 1
10 16k R8 R3 1
11 27k R9 R3 1
12 10u C3 1206 1
13 4.7k R10 R3 1
14 2N6027 Q1 TO92-OVAL 1

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