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Posts tagged HEP 230

Earphone portable Circuit

Earphone portable Circuit using 1 transistor HEP 230 Portable 3v Headphone Amplifier

Radio 810 mw circuit

Radio 810 mw circuit using LM386 and ZN414 Radio 810 mw circuit using LM386 and ZN414

PCB Booster tube and light flow control valves using 12AU7

PCB Booster tube and light flow control valves using 12AU7 A 12AU7-based booster and light overdrive running at 9 volts.  A very fun little circuit that has a minimal parts count and actually generates a good amount of boost and some overdrive. You can even run this one of a 9 volt battery if you […]

Circuit diagram Laptop LCD Display to VGA Interface Project

How do I connect my VGA card to a LCD display taken from an old laptop ? Many people have recently started to ask how to connect an LCD screen taken from an old laptop computer. This is a very common question in many discussion forums. The common answer is NO. The LCD is generally […]

8 channel LED driver circuit using ISL97678

8 channel LED driver circuit using ISL97678

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