

Topic Entry
- digital system using 7segment decoder
- 2 J-Fet as Mixer
- Radio tuning PLL frequency synthesizer scheme
- Build An Audio/RF Signal Tracer
- 2n3055 power supply schematic
- current booster
- 7812 voltage regulated power supply and the voltage on each component
- schematic with solid state relay installed
- regulator 5v 5a schemtic
- circuit diagram of dynamic microphone preamplifier