1 Ohm Resistor
1 Ohm Resistor
(OP)
Hi all,
I have some RF receivers that accidentally I broke one of the resistors they contain (see photo).
This seems to be 1 ohm 20% resistor (3 band - Brown Black Gold) and I tried to replace it with 1.2 ohms 5% (although the multimeter shows 2 Ohm...) with no luck.
May I please ask:
1) Is it so critical that it must be exactly 1 ohm AND 20%?
2) Shall I assume that maybe after I broke them, I affected them in a non-reversible way?
3) Any other suggestions?
Regards,
Alexis Yannopoulos
Mech. Engineer NTUA, MSc
I have some RF receivers that accidentally I broke one of the resistors they contain (see photo).
This seems to be 1 ohm 20% resistor (3 band - Brown Black Gold) and I tried to replace it with 1.2 ohms 5% (although the multimeter shows 2 Ohm...) with no luck.
May I please ask:
1) Is it so critical that it must be exactly 1 ohm AND 20%?
2) Shall I assume that maybe after I broke them, I affected them in a non-reversible way?
3) Any other suggestions?
Regards,
Alexis Yannopoulos
Mech. Engineer NTUA, MSc





RE: 1 Ohm Resistor
That looks like an inductor, nor a resistor. Seems too short and fat for a resistor.
RE: 1 Ohm Resistor
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If we learn from our mistakes I'm getting a great education!
RE: 1 Ohm Resistor
Keith Cress
kcress - http://www.flaminsystems.com
RE: 1 Ohm Resistor
This green 3-band thing is an inductor?
How do I specify how many henry is? My multimeter doesn't have any scale for H...
RE: 1 Ohm Resistor
Measure the ohms by touch both the test leads to different parts of the SAME component lead. Note the reading. Then move one of the test leads to the other side. Note this new reading. Subtract the single lead reading to get the actual resistance.
If it's an inductor as apposed to a resister I would expect something like 0.1 ohms. Again this is measuring the "broken part".
Once confirmed you can then consider the value to possibly be 0.1uH of inductance. Brown,Black,Gold.
Keith Cress
kcress - http://www.flaminsystems.com
RE: 1 Ohm Resistor
Good luck,
Engin
RE: 1 Ohm Resistor
So I need to buy some of those in different values.
1) Is it difficult to find them? I searched on the web and found no similiar enclosure for inductors
2) If I test with different Henries, is it possible that I may "burn" it?
Regards,
Alexis Yannopoulos
Mech. Engineer NTUA, MSc
RE: 1 Ohm Resistor
2) No chance of burning anything at all
3) That inductor can not be *that* important. You can even try several wire wound resistors with values between 0.1 to ~2.5 ohms, which is generally available in the junk box of every electronics enthusiast.
4) You can get help from a radio amateur (your local ARRL clubhouse?) nearby. Inductors and transmitters are their specialty, and they are (were) usually helpful guys.
Good luck,
Engin
RE: 1 Ohm Resistor
Also many thanks for the tip about measuring resistors
Rgds
RE: 1 Ohm Resistor
Keith Cress
kcress - http://www.flaminsystems.com
RE: 1 Ohm Resistor
Went to a electronics shop - they couldn't find how many Henries my inductor was so they were looking for some with the same color bands. No luck so they gave me some other 4-band inductors that I connected on the PCB with no results.
What shall I do next?
Regards,
Alexis Yannopoulos
Mech. Engineer NTUA, MSc
RE: 1 Ohm Resistor
RE: 1 Ohm Resistor
Any recommendations and/or suggestions?
Rgds
RE: 1 Ohm Resistor
http:
RE: 1 Ohm Resistor
Keith Cress
kcress - http://www.flaminsystems.com
RE: 1 Ohm Resistor
I am clueless - what do you make?
Regards,
Alexis Yannopoulos
Mech. Engineer NTUA, MSc
RE: 1 Ohm Resistor
Keith Cress
kcress - http://www.flaminsystems.com
RE: 1 Ohm Resistor
I am afraid it will be rather risky. What do you reckon?
Regards,
Alexis Yannopoulos
Mech. Engineer NTUA, MSc
RE: 1 Ohm Resistor
RE: 1 Ohm Resistor
Rgds
RE: 1 Ohm Resistor
Regards,
Alexis Yannopoulos
Mech. Engineer NTUA, MSc
RE: 1 Ohm Resistor
Thanks for all support
Regards,
Alexis Yannopoulos
Mech. Engineer NTUA, MSc
RE: 1 Ohm Resistor
I got some 1uH rf chokes from ebay and YES it worked. I am so grateful to you all. Thanks a zillion.
Regards,
Alexis Yannopoulos
Mech. Engineer NTUA, MSc
RE: 1 Ohm Resistor
Bill
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Jimmy Carter