

Topic Entry
- 7812 voltage regulated power supply and the voltage on each component
- power amplifier 300 watt
- 12VDC to 220VAC Inverter with 555 Timer
- L2803 schakeling
- An Improved Microphone Preamplifier Integrated Circuit
- 12v to 5v 5a converter circuit
- transistor mic preamp with controls
- tda7000 pcb
- simple fet mixer
- 2 J-Fet as Mixer