 CIRCATS - Circuit Catalogs Schematics of simple circuits in GIF and PDF format. |
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Audio and Op amps
- Audio Buffer GIF / PDF
- Audio Oscillator GIF / PDF Modified Wein Bridge.
- Simple Discrete Op amp GIF / PDF made with common transistors.
- JE-990 Discrete Op amp GIF / PDF by Deane Jensen.
- Mic Preamp GIF / PDF Based on SSM-2017.
- Op amp circuit #1 GIF / PDF Basic inverting and non-inverting circuits.
- Op amp circuit #2 GIF / PDF Simple op amp differential amplifier ("balanced" input).
- Op amp circuit #3 GIF / PDF True balanced / instrumentation style input circuit.
- Op amp circuit #4 GIF / PDF Simple 4-input mixer stage.
- Op amp circuit #5 GIF / PDF Single supply op amp circuit.
- Simple DAC GIF / PDF
- Audio Tone Control GIF / PDF Shelving bass and treble tone controls.
- 10 Watt IC Power Amp GIF / PDF TDA-2030.
- 20 Watt IC Power Amp GIF / PDF LM1875.
Power Supply
- Op Amp Power supply GIF / PDF Dual +/- power supply for the 'Op amp circuit #x' above.
- Three-terminal regulators #1 GIF / PDF
- Three-terminal regulators #2 GIF / PDF
Microprocessor and Logic
- 8031 Core GIF / PDF 8031 with memory and serial I/O.
- Z80 core #1 GIF / PDF Z80 CPU and memory.
- Z80 core #2 GIF / PDF Z80 CTC and SIO.
- Z80 core #3 GIF / PDF RS-232 drivers for the SIO.
- CMOS RC timing GIF / PDF
- PC I/O decoder circuit GIF / PDF
Dave Baldwin is DIBs Electronic Design, providing design support for Audio, Analog, Digital, and Microprocessor systems. Contact Dave at DIBs Electronic Design Dave's PDF Business Card