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EFS, SAS and CCTV
electronics
house electrical symbols
hydraulics
IC
machines
measuring devices
mechanical parts
microwave technology
miscellaneous
others
outdoor installations
P&ID
passive components
PC
pneumatic diagrams
power installations
production and conversion of electrical energy
relays and switches
samples version 4
semiconductors and tubes
switchgear and protective devices (ANSI)
switchgear, controlgear and protective devices
telecommunications
transmission
trunking systems
electronics
amplifiers
toys
power supply for a fluorescent lamp 12V=
alternate LED blinker with adjustable speed
led 4047
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