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    Soldering station Ersa RDS-80

    I have already ordered in the online store (BAS83) and I definitely want to change 1n4148.

    All diodes 1N4148 with a black stripe, and this one with a gray.

    Analog Circuits ·Leonid S. · ·27 Replies

  • Thread

    OpenHR20: Firmware for Honeywell Rondostat HR20E

    = 0xFF; // reset counter // wait for the compare-match on timer2: while ( !(TIFR2 & (1<<TOV2)) ) {Z++;} asm volatile ( "jmp1:" "\n\t" "adiw %A0,1" "\n\t" /*2 cycles*/ "sbis %[tifr2],0" "\n\t" /*1 cycle*/ "rjmp jmp1

    have 5V powered serial, 5V come from RXD signal to CPU. Solution is simple, add one diode (example 1N4148 or any) anode to RXD on CPU, katode to serial convertor.

    µC & Digital Electronics ·Mario Fischer · ·1121 Replies

  • Thread

    APC SMT3000I - resistor R11 (0R33 5W) smoking

    circuitry, something seems to be missing. (two current transformer, one 230V 60Hz and one 240V with 1n4148 switching diodes each, one 100kHz with battery input and 12V/24V output) [1] https://elektrotanya.com/apc_smart-ups_su2200_3000.pdf/download.html

    Please can you give me the values for the two crystals XT1 and XT600 on the main board of the APC smart ups SMT3000I,thanks.

    Analog Circuits ·elk0 · ·3 Replies

  • Thread

    Diode replacements database

    In case you need replacements for diodes, such as 1N4148, the following Web site might be useful: http://www.daselec.com.ar/buscadores-reemplazos-componentes-electronicos.htm Douglas Pears

    µC & Digital Electronics ·Douglas Pears · ·0 Replies