Velleman EDU01 User Manual
Page 15
www.vellemanprojects.com
Pag. 15
Required parts: 9V battery*, 2x 1K resistor (brown black red gold), 2x 100K resistor
(brown black yellow gold), 2x red LED, 2 x BC547 transistors, 2x 10µF electrolytic
capacitors
The LED on-time can be calculated:
T = 0,693 x R1(
Ω) x C1 (F)
T = 0,693 x 100.000 x 0.00001 = 0,693sec.
How it works: The 2 transistors
alternately conduct because the
capacitors are charged and discharged.
The speed at which this happens
depends on the capacitors (C1, C2)
and the resistors (R1, R2). Use a
higher capacitor and resistor value in
order to extend the LED lighting time.
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)