From c4c818de744f88b88798a8f3efac6e34f1dab553 Mon Sep 17 00:00:00 2001 From: Nis Wechselberg Date: Fri, 29 Jun 2018 00:37:16 +0200 Subject: [PATCH] Small typos --- content/posts/2018-06-25-Saike-858D-Measurements.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/content/posts/2018-06-25-Saike-858D-Measurements.md b/content/posts/2018-06-25-Saike-858D-Measurements.md index df11e0b..5bc31a3 100644 --- a/content/posts/2018-06-25-Saike-858D-Measurements.md +++ b/content/posts/2018-06-25-Saike-858D-Measurements.md @@ -33,7 +33,7 @@ This means the transformer produces a voltage a bit higher than rated. ![10V Rail With Fan Running](/posts/images/858D/10VAC_Fan_Running.png) If the fan is running, the 10V rail degrades a bit more and slightly drops in voltage. -Again, given the fact that it it fed through a rectifier and then a voltage regulator, that is almost fine. +Again, given the fact that it is fed through a rectifier and then a voltage regulator, that is almost fine. I don't really like that we use a voltage of about 12V as the input for the 7805 voltage regulator. We power the microcontroller, the display, the EEPROM and a bit of other stuff from the regulator so I would guess the current is not too high, probably in the few hundreds of mA. @@ -60,7 +60,7 @@ At the maximal position, the voltage rises to 28.2 volts, more than 4 volts over I am not really happy with the transformer in the device. The rating is dodgy at best, and lots of energy is wasted in heat in regulation circuits. -At the moment I tend towards replacing the transformer with a 24 volts switching power supply and a small buck converter for the 5 volts logic circuts. The fan regulation could then be done through simple PWM. +At the moment I tend towards replacing the transformer with a 24 volts switching power supply and a small buck converter for the 5 volts logic supply. The fan regulation could then be done through simple PWM. [1]: {{}}