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Turcu Gheorghe PF - E-book - Proiectare-Executare
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Scheme.ro - multe scheme electronice
Tehnic.go.ro - scheme electronice si mecanice
Emil Matei - Practical electronics - practical electronics

Electroniq.net - ghidul tau in electronica - scheme
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Giros Construct - Case de lemn la 370 €/mp
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Electronice de la A la Z - servicii si comert in electronica


4QD-TEC: Audio circuits
15 Watt Amplifier
A Potpourri of Audio Amplifiers
Amplifier with Tone Controls
Audio Amp Power Limiter
Bridge amplifiers
Computer Microphone
Death of Zen Class-A
Discover Circuits
Electronic Circuit Schematics
HeadWize Library
Hi-Fi Headphone Amplifier
Integrated Circuit Audio Amps
WebEE Schematics and Projects
Electronic Doorbell with Counter
5 to 30 Minute Timer
Alarm and Security Circuits
Practical voltage converter
Transformerless Power Supply
Regulated 12 Volt Supply
10GHz wideband transceiver
Build your own radio transmitter
Handy dandy little circuit #17-3
One transistor FM radio project