David Griffith

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

Gschem Schematic Symbols

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

Power

• 2.2 volts positive.
• 2.2 volts negative.
• 3 volts positive.
• 3 volts negative.
• 4.5 volts positive.
• 4.5 volts negative.
• 8 volts positive.
• 8 volts negative.
• 10 volts positive.
• 10 volts negative.
• 15 volts positive.
• 15 volts negative.
• 920 volts positive.
• 920 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.
• 2n3392 NPN general purpose amplifier transistor.
• 2n4091 N-Channel JFET.
• 2n4058 PNP general purpose signal amplifier transistor.
• 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.
• MPSU-05 PNP High Voltage Amplifier.
• MPSU-55 PNP High Voltage Amplifier.
• TL084 JFET-Input Opamp.
• FM6400 Dual Channel Video Driver with Integrated Filters and Composite Video Summer.

Texas Instruments

• SN75240 USB Port Transient Suppressors.
• TUSB2046 4-Port Full Speed USB Hub.
• TPS2041 Current-Limited Power Distribution Switches.
• TPS2044 Current-Limited Power Distribution Switches.
• TPS7613x Low Power Low Dropout Voltage Regulator.

Switches

• 4PDT Quad Two-Way Switch.
• 4PDT Quad Two-Way Switch (slots).
• Electroswitch 3P4T Rotary Switch.

Title Blocks

• A titleblock that doesn't crowd the workspace.

Misc

• A basic ammeter.
• A basic voltmeter.
• Xicon 42TM series transformers.
• A 6-conductor two-row header. Anticlockwise pin numbering.
• A 6-conductor two-row header. Left-to-right pin numbering.
• 4-resistor version of the standard isolated resistor pack.

Probationary Gschem Schematic Symbols

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

• Ganged variable capacitor (for radio use)
• Reflective optical sensor (four pins)
• Reflective optical sensor (three pins)
• Microchip MCP170X LDO voltage regulator in TO92

PCB Footprints

Scripts

• R025_vert.pl 0.25W resistor mounted vertically.
• rotaryswitch-3p4p.pl
• bourns_3266-3296.pl Generates footprints for all varieties of Bourns 3266 series trimmer potentiometers.

Stable PCB Footprints

• PAD-L.fp Single Large Terminal
• R025_vert.fp 0.25W resistor mounted vertically.
• IND__Xicon_42IF-Series.fpXicon 42IF series Intermediate Frequency transformer.
• HP48M.fp HP48 memory card edge.
• ACY1300P.fp Axial polar component (typically capacitor)
• D500.fp 500-mil spaced diode (1N5818 or similar)

Probationary PCB Footprints

• POT_BOURNS_3386P.fp 3/8" Bournes 3386P trimmer.
• CAP__BC88-B540.fp Miniature Poly-film Variable Tuning Capacitor For AM & FM Bands. See this page for the exact part.
• SWITCH_ROT__Electroswitch_C5_3P4P.fp Electroswitch C5 / C6 series 3-pole rotary switch.
• VISHAY_TCRT1000.fp Vishay TCRT1000 reflective optical sensor.
• HONEYWELL_HLC1395.fp Honeywell HLC1395 series reflective optical sensor.
• CTS-742-8pin-1.fp CTS Series 742 chip resistor array 8-pins.

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