Velleman EDU01 User Manual
Page 13

www.vellemanprojects.com
Pag. 13
Required parts: 9V battery*, 1K resistor (brown black red gold), 470K resistor (yellow 
purple yellow gold), red LED, BC547 transistor, wire jumper. 
How it works: In this circuit, the small 
current flowing through your finger will be 
amplified by the transistor. 
The base current that runs via your finger 
and resistor R1, is amplified by transistor T1. 
The amplified current flows through the LED 
and R2 making the LED lit. 
R3 will prevent the transistor for unwanted 
functioning.
HINT: wet you finger to make the LED
light up stronger.
                    See also other documents in the category Velleman Hardware:                                                            
                    - NC3MDL1-B (2 pages)
 - NC3MXX (1 page)
 - NC5FDL1 (2 pages)
 - NC3MDL1 (2 pages)
 - NC5MX (1 page)
 - MK166 (1 page)
 - К8095 (9 pages)
 - VMa02 (4 pages)
 - VM8090 (1 page)
 - VM116 (32 pages)
 - EDU02 (28 pages)
 - VM202 (1 page)
 - NL4MP (1 page)
 - NC3MXX-BAG (1 page)
 - VM120 (48 pages)
 - VM153 EU (1 page)
 - VM119 (32 pages)
 - VM133 (24 pages)
 - VM148 (24 pages)
 - MK155 (1 page)
 - VCC6 (20 pages)
 - MK179 (2 pages)
 - VMa04 (4 pages)
 - VM122 (44 pages)
 - VM134 (24 pages)
 - NAC3FCA (1 page)
 - VM121 (32 pages)
 - К8048 (15 pages)
 - К8048 (14 pages)
 - VM150 (1 page)
 - VMa01 (4 pages)
 - NL4FX (2 pages)
 - VM152 (20 pages)
 - MK157 (1 page)
 - VM112 (4 pages)
 - VM130 (20 pages)
 - NC3FXX-BAG (1 page)
 - MK160 (1 page)
 - NC5MDL1 (2 pages)
 - VM118r (36 pages)
 - VM179 (2 pages)
 - VM192ir (2 pages)
 - VM138 (40 pages)
 - VM160 (20 pages)
 
