I'm not sure what you mean by integrators. The DAC outputs are configured as unbuffered, to use the full range 0 tot 3,3 Volt (internal STM buffers are not rail to rail). So, the DAC output is connected to an opamp buffer and from there to a amplifing and summing opamp, and further to a transistor high voltage class A amplifier. Very straight forward.
Op dinsdag 27 februari 2024 om 08:51:14 UTC+1 schreef Toby Thain: > On 2024-02-26 4:12 a.m., paulvr wrote: > > This is my first post in this forum and I would like to introduce you to > > my version of the scope clock. Mainly inspired by the work of David > > Forbes and Grahame Marsh. > > The work is not finished yet, but I have reached a milestone for myself > > in that all components are on one PCB and only one voltage source is > > required, nm. 12 volts DC. > > The high voltage is made using a standard Würth WE-flex transformer, > > plus and minus 250 Volt. The filament voltage is provided by a buck and > > forward converter and a standard Würth push-pull transformer (6.3 Volt > > to 600mA). > > The MCU is an STM32G491, mainly chosen because of the integrated 12-bit > > DACs. The image composition is completely DMA controlled and works > > independently of the CPU, which therefore has a lot of time for other > tasks. > > The characters and graphic shapes are encoded as SVG path. > > Looks great. > > Does the signal generation use integrators or is it direct 2 channel DAC > output to amplifiers and plates? > > --Toby > > > > An ESP32 has been added to achieve the correct time according to the > > NTP. Operation is entirely via a web server running on the ESP32. The > > software is not finished, and not all functions work (work in progress). > > The next step is to try out other CRT tubes and make a housing. > > > > Regards, > > Paulscope_clock_DG7_32_v0_5.jpg > > > > -- > > You received this message because you are subscribed to the Google > > Groups "neonixie-l" group. > > To unsubscribe from this group and stop receiving emails from it, send > > an email to neonixie-l+...@googlegroups.com > > <mailto:neonixie-l+...@googlegroups.com>. > > To view this discussion on the web, visit > > > https://groups.google.com/d/msgid/neonixie-l/4e60fa43-a9b5-40b5-8381-5a968b45d480n%40googlegroups.com > > < > https://groups.google.com/d/msgid/neonixie-l/4e60fa43-a9b5-40b5-8381-5a968b45d480n%40googlegroups.com?utm_medium=email&utm_source=footer > >. > > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/fc73b2f8-d8c7-4b1b-a287-9ed92262382an%40googlegroups.com.
