Deflection amp
About the Deflection amp PCB
Deflection amp is an open source PCB design by eshazen, published on GitHub. It is a 2-layer board measuring 177.8 × 101.6 mm, with 40 components from 17 distinct parts.
Other key parts include the 6SN7. By type, the board carries 22 resistors, 9 capacitors, 4 connectors and 3 ICs.
From the project
OK, time to jump on the oscilloscope clock bandwagon! It's an old idea, but they just look so cool.
OK, time to jump on the oscilloscope clock bandwagon! It's an old idea, but they just look so cool.
This was going to be a simple clone of some rather simplistic transistor-based designs around the internet, but now I've got something more ambitious in mind! Here's the prototype in action:
3BP1(A) CRT with proper drive to +360/-1400V pcb Tube-based deflection circuit using 6SN7 or 12SN7 dual triodes pcb Voltage-multiplier HV supply using an Antek transformer Display-list based vector graphics generator (or could cheat and use a uC)
Main components on the Deflection amp
Deflection amp bill of materials (BOM)
40 components, 17 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 6SN7 | AES-P-ST8-193 | U1, U2, U3 |
| 1 | CONN_01X02 Conn_01x02 | Molex_KK-396_A-41791-0002_1x02_P3.96mm_Vertical | J1 |
| 1 | CONN_01X04 Conn_01x04 | PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | CONN_01X03 Conn_01x03 | Molex_KK-396_A-41791-0003_1x03_P3.96mm_Vertical | J3 |
| 1 | CONN_01X06 Conn_01x06 | PinHeader_1x06_P2.54mm_Vertical | J4 |
| 2 | 25K 25k | Potentiometer_Vishay_148-149_Single_Horizontal | RV1, RV2 |
| 1 | 10uF 500V | CP_Radial_D12.5mm_P5.00mm | C1 |
| 2 | 0.025UF 0.025uF | Cap-Disc-D7.4-P6.4 | C3, C4 |
| 2 | 2.2uF 250V | C_Rect_L26.5mm_W8.5mm_P22.50mm_MKS4 | C5, C6 |
| 2 | 220PF 220pF | C_Disc_D8.0mm_W2.5mm_P5.00mm | C7, C8 |
| 2 | 0.1UF 0.1uF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C9, C10 |
| 6 | 1M 1/2W | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1, R2, R7, R9, R19, R21 |
| 2 | 220 1/2W | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R3, R4 |
| 6 | 10k 5W | R_Axial_DIN0617_L17.0mm_D6.0mm_P25.40mm_Horizontal | R5, R6, R11, R12, R15, R16 |
| 4 | 10k 1/2W | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R8, R10, R20, R22 |
| 2 | 1.8K 1.8k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R13, R14 |
| 2 | 120k 2W | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R17, R18 |
Deflection amp design files
The KiCad project lives in the eshazen/scope-clock repository on GitHub; these links point at the commit this page was built from.
Deflection amp: common questions
How big is the Deflection amp PCB?
The Deflection amp measures 177.8 × 101.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Deflection amp?
40 components, from 17 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Deflection amp design files?
From the eshazen/scope-clock repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Deflection amp design in my own project?
The repository has no license, so all rights stay with eshazen. Use it as a reference, and ask the author before reusing the design.
