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haichen

chen haiyan

Technician

Circuits

12

Favorites

15

Groups

3

Latest Circuits

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lamps, LEDs, fuses, switches, timed switches

by haichen

0
copy
0
164
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test-7-segment

by haichen

0
copy
0
662
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outdatedComponents

by haichen

0
copy
0
107

Latest Favorites

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MOSFET Audio Amplifier

by SiLRing

15
copy
170
10140
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Voltage Controlled Oscillator using 555 Timer

by Evert_T

6
copy
51
9634
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transistor 1 António Figueiredo

by toinfigas

7
copy
0
455

Groups

Group Type Users Circuits Discussions
A-test group

this group is for testing . open

Open

2

0

0

B-test group

this is for testing. closed group

Closed

1

0

1

C-test group

this group is for testing. private needs approval.

Private

1

0

1

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