sourDough LM9022 IV-3a VFD Filament PSU

by PhantomicLabs.

2 layer board of 1.00x0.92 inches (25.40x23.32 mm).
Shared on November 20th, 2017 18:09.

This is board made to supply 1.5V AC, to the filament of IV-3/3a VFD tubes. Chip is the obsolete LM9022. Power input is from any 3.3VDC regulator. I used a TI UA78M33DCY reg for this and got near perfect output.

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ControlCircuitrySenior7.brd

by yllanesgene.

2 layer board of 3.09x2.50 inches (78.44x63.50 mm).
Shared on November 20th, 2017 17:57.

Resonant Converter Logic

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NSM4202 / NSM4002

by Bramjacobse.

2 layer board of 1.58x0.79 inches (40.16x20.14 mm).
Shared on November 20th, 2017 15:46.

NSM4202 / NSM4002 Replacement

Functional Replacement for Philips NSM4202 / NSM4002 Display Module

BOM:

U1 - Micrel MM5450 (PLCC-44) LED Display Driver DS1-DS4 - Kingbright ACSA03-41SGWA-F01 7-Segment Common-Anode LED Display R1 - 10KOhm (or higher) 1206 SMD Resistor (controls brightness) C1 - 1000pF 1206 SMD Capacitor C2 - 100nF 1206 SMD Capacitor J1- 0.1" header system of your choice

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the bat board rev3

by flabbergast.

2 layer board of 1.41x0.71 inches (35.71x17.93 mm).
Shared on November 20th, 2017 11:03.

A teensy-sized breakout board for QFP-48 STM32 MCUs (rev3). Originally designed for STM32L052CxTx, but should work with any pinout-compatible MCUs (most of LQFP-48 packaged STM32s should work, but check the datasheet! Tried with STM32L052C8T6, STM32F072CBT6, STM32F103C8T6).

Intended for low-power applications (e.g. sensors).

Features:

  • hand-solderable (0603, SOT-563 regulator, LQFP-48 (0.5mm pitch) MCU)
  • power options (USB <-> solder jumper <-> VIN <-> regulator <-> solder jumper <-> VDD net) - so it is possible to bypass the voltage regulator entirely; or add a LIPO-charger external module.
  • analogue supply optionally routed through a ferrite bead, and a footprint for an extra stabilising capacitor
  • 1 LED, reset button, user button (routed to BOOT0 and PA1) {hence the user button can be used to enter the built-in bootloader}
  • a footprint for adding an external high-frequency crystal (required for STM32L1* for USB)

More docs

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PPMS_LCC32v3_Type3_AC transport_resistivity_mod.brd

by angel6700.

2 layer board of 0.62x0.90 inches (15.82x22.89 mm).
Shared on November 20th, 2017 07:53.

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