Home › Forum › Hardware › DIY KIT1 v102 – Unit voltage on GM tube is too low › Reply To: DIY KIT1 v102 – Unit voltage on GM tube is too low
July 25, 2020 at 1:48 pm
#28469
OutsiderParticipant
The low 15V tube voltage is also displayed on-screen (KIT1 screen, not multimeter).
I have measured R3 to ground: 8.5 Mohm. R3+R5 to ground: 17.2 Mohm (with the tube in circuit).
I suppose M1 has only 2.7V because I use 2xAA batteries to power the kit.