David Griffith

If you ever wonder where that big list of standard footprints is, it's here.

Stable Gschem Schematic Symbols

These symbols were created for past projects and are considered reliable.

Power

• 8 volts positive
• 8 volts negative

Semiconductors

• SN75150 dual line driver
• SN75154 quad line receiver
• 74590 8-bit binary counter
• lm7808 8V+ voltage regulator
• MOS 6581 SID sound chip
• Atari POKEY sound chip
• 16v8 programmable logic
• 20v8 programmable logic

Switches

• 4PDT Quad Two-Way Switch

Title Blocks

• A titleblock that doesn't crowd the workspace.

Misc

• A basic ammeter
• A basic voltmeter

Probationary Gschem Schematic Symbols

These symbols are being used in the first project for which they were made, and therefore may change without notice.

Semiconductors

• 2n4126 PNP general purpose amplifier transistor
• 2n4124 NPN general purpose amplifier transistor
• 8-bit, high speed multiplying D/A converter
• LM13700 Dual Operational Transconductance Amplifier with Linearizing Diodes and Buffers
• TL084 JFET-Input Opamp

Switches

• Electroswitch 3P4T Rotary Switch

Stable PCB Footprints

Probationary PCB Footprints

• Electroswitch C5 / C6 series 3-pole rotary switch