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2N6028 Oscillator
PROXXON Power Supply
Arduino Bluetooth ON/OFF controll
Common emitter amplifier design
Crystal radio receiver
Flame diode
Germanium transistor amplifier-0.5watt
Led and phototransistor
Line follower
LM317 mini power supply
MSP430 launchpad
PC Boards etching
PCB drill press
PHILIPS GM5606 osciloscope
RIZ SOLID STATE RADIO RECORDER
Steam engine
TA7642 AM RADIO RECEIVER
TDA 1905 5watt amplafier(slo/eng)
Wooden coil winder
Z80 5x5 LED screen
z80 computer
Elektronika Simon
Line follower
Schematic:
Add 1k or2k2 resistor on the base of TR3 and connect it to +3volts.
*_*
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