On 2020-Mar-07, at 11:35 PM, Adrian Stoness wrote:
yea i do but its not giving me anything thats making
sens the value jumps all over the place. on the ones ive tried
If the Rs are high value, set the MM to the 2Mohm range and make sure your fingers are not
touching the metal circuit elements / test probes.
At high-R you and your fingers will be a conductive path and the R will vary with your
finger pressure and give erratic readings.
lamps not sure how u tell what they are no marking on
them rather tiny
Incandescent lamps have two riser wires that diverge at the top with a filament inbetween
them, neon lamps of that size usually have two thick parallel 'posts' inside
On 2020-Mar-08, at 12:20 AM, Adrian Stoness via cctalk wrote:
as for the lamps if i wanted to test them one at a
time would i just give
them 12V directly? or would it be lower dont have a variable power supply
atm just an old pc one
No 5V on the PS?
12V could be too much or too little. You could try it very briefly, or you could try
putting a (say) 100 ohm R in series with the lamp and 12V to limit the current and see if
you get any illumination. Ideally, measure the voltage across the 100 ohm R, if the
voltage drop is 0, it's a burned out incandescent lamp or they're neon lamps.