Reference schematic
Ramsey Ct 70
abzman-ramsey-ct-70-ramsey-ct-70-schematic
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abzman-ramsey-ct-70-ramsey-ct-70-schematic
Take the project archive: a schematic is a root sheet plus every sub-sheet beside it, and the root alone opens with its hierarchy missing. The archive is zstd-compressed (tar.zst).
Bill of materials
92 distinct parts
84 resolve to something in the catalog — click through to the component.
| Ref | Value | Symbol | Qty |
|---|---|---|---|
| B1 | 5v | Connector:Conn_01x02_Socket | |
| C1 | 0.001uF | Device:C | |
| C10 | 0.001uF | Device:C | |
| C11 | 1000uF | Device:C_Polarized | |
| C12 | 22pF | Device:C | |
| C13 | 40pF trimmer | Device:C | |
| C14 | 22pF | Device:C | |
| C15 | 220uF | Device:C_Polarized | |
| C16 | 0.001uF | Device:C | |
| C17 | 47pF | Device:C | |
| C18 | 1uF | Device:C_Polarized | |
| C2 | 0.001uF | Device:C | |
| C3 | 0.001uF | Device:C | |
| C4 | 100pF | Device:C | |
| C5 | 1uF | Device:C_Polarized | |
| C6 | 1uF | Device:C_Polarized | |
| C7 | 1uF | Device:C_Polarized | |
| C8 | 1uF | Device:C_Polarized | |
| C9 | 1uF | Device:C_Polarized | |
| CR1 | 1N4148 | Diode:1N4148 | |
| CR10 | 1N4148 | Diode:1N4148 | |
| CR11 | 1N4003 | Diode:1N4003 | |
| CR12 | 1N4003 | Diode:1N4003 | |
| CR13 | 1N4003 | Diode:1N4003 | |
| CR14 | W04G | Diode_Bridge:W04G | |
| CR15 | GATE | Device:LED | |
| CR2 | 1N4148 | Diode:1N4148 | |
| CR3 | 1N4148 | Diode:1N4148 | |
| CR4 | 1N4148 | Diode:1N4148 | |
| CR5 | 1N4148 | Diode:1N4148 | |
| CR6 | 1N4148 | Diode:1N4148 | |
| CR7 | 1N4148 | Diode:1N4148 | |
| CR8 | 1N4148 | Diode:1N4148 | |
| CR9 | 1N4148 | Diode:1N4148 | |
| DS1 | HDSP-A153 | Display_Character:HDSP-A153 | |
| DS2 | HDSP-A153 | Display_Character:HDSP-A153 | |
| DS3 | HDSP-A153 | Display_Character:HDSP-A153 | |
| DS4 | HDSP-A153 | Display_Character:HDSP-A153 | |
| DS5 | HDSP-A153 | Display_Character:HDSP-A153 | |
| DS6 | HDSP-A153 | Display_Character:HDSP-A153 |
Show the other 52
| DS7 | HDSP-A153 | Display_Character:HDSP-A153 | |
| J1 | BNC in | Connector:Conn_Coaxial | |
| J2 | Charger in | Connector:Conn_Coaxial | |
| Q1 | 2N5179 | Evan's parts:2N5179 | |
| Q2 | 2N5484 | Evan's parts:2N5484 | |
| Q3 | 2N5771 | Evan's parts:2N5771 | |
| Q4 | 2N3906 | Transistor_BJT:2N3906 | |
| Q5 | 2N5179 | Evan's parts:2N5179 | |
| Q6 | 2N3906 | Transistor_BJT:2N3906 | |
| R1 | 10k | Device:R | |
| R10 | 270 | Device:R | |
| R11 | 470 | Device:R | |
| R12 | 1k | Device:R | |
| R13 | 1k | Device:R | |
| R14 | 470 | Device:R | |
| R15 | 470 | Device:R | |
| R16 | 470 | Device:R | |
| R17 | 270 | Device:R | |
| R18 | 270 | Device:R | |
| R19 | 270 | Device:R | |
| R2 | 470 | Device:R | |
| R20 | 100 | Device:R | |
| R21 | 10 | Device:R | |
| R22 | 10 | Device:R | |
| R23 | 10 | Device:R | |
| R24 | 10 | Device:R | |
| R25 | 100 | Device:R | |
| R26 | 10 | Device:R | |
| R27 | 22M | Device:R | |
| R28 | 10k | Device:R | |
| R29 | 10 | Device:R | |
| R3 | 270 | Device:R | |
| R30 | 10 | Device:R | |
| R31 | 10 | Device:R | |
| R32 | 10 | Device:R | |
| R33 | 10 | Device:R | |
| R34 | 10 | Device:R | |
| R35 | 10 | Device:R | |
| R36 | 10k | Device:R | |
| R4 | 100k | Device:R | |
| R5 | 1M | Device:R | |
| R6 | 1k | Device:R | |
| R7 | 10 | Device:R | |
| R8 | 51 | Device:R | |
| R9 | 150 | Device:R | |
| U1 | 11C90 | Evan's parts:11C90 | |
| U2 | 10116 | Evan's parts:10116 ECL Amplifier IC | |
| U3 | 74196 | 74xx:74LS196 | |
| U4 | 7207A | Evan's parts:ICM 7207 | |
| U5 | 7208 | Evan's parts:7208 MOS-LSI Counter IC | |
| VR1 | LM7805_TO220 | Regulator_Linear:LM7805_TO220 | |
| Y1 | 5.24288 Mhz | Device:Crystal |
Provenance
- Repository
- abzman/ramsey-ct-70 ↗
- Commit
- unknown
- Licence
- CC-BY-4.0
How it is used
Trace's agent reads this design as context — what parts a board like this carries, how they are grouped across sheets, what a plausible layer stack and board size look like for the job. It is not copied. The licence above is permissive, and it, the repository and the commit are recorded so the origin of anything derived from it is always answerable.