X
Advertisement

1,046 questions

1,221 answers

206 comments

785 users

how can I economically convert 120vac to 12vdc to power a low amp draw transmitter/receiver

25 views
0 votes
how can I economically convert 120vac to 12vdc to power a low amp draw transmitter/receiver

Hello all,

Short of buying and cannibalizing wall warts from ebay, I would like to build a handful of reliable and safe transformers/adapters or whatever would be the correct lingo. I have a little bit of experience with circuitry, diagrams, voltage drop, etc.. but choosing the right parts off the net is the difficult part. I have also found diagrams for "transformerless" power supplies.. https://www.ebay.com/itm/12V-4CH-Channel-Wireless-Remote-Control-Radio-Relay-Switch-Transceiver-Receiver/122036934849?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

this is a link to the transmitter/receiver combo that I am interested in. According to the specs, it only draws 13mAh.

Any input, or links to other projects would be appreciated..

Thank you,

Kyle

 

asked Oct 28, 2017 by kcb75usyahoo-com (120 points)

Please log in or register to answer this question.

Related questions

  • 0 votes
answered Dec 22, 2012 by lookingfordbn (320 points)
  • 2 votes
  • 3 answers
  • 321 views
  • 0 votes
  • 1 answer
  • 508 views

1,046 questions

1,221 answers

206 comments

785 users

Latest Article Comments

Measuring Air...
"@sasitharan73: The mentioned components is a 10K PTC Thermister (1002). Note, this revision (P)"
Measuring Air...
"I purchased the Wind Sensor Rev. P model. In that model i want some details about the component and"
Build Your Own Digital FM Radio Transmitter with...
"Thank you, T.K. Will report back"
Build Your Own Digital FM Radio Transmitter with...
"@porrick: Not tried NS73M FM module yet! Usually you need to connect just 6 pins of NS73M for"
Build Your Own Digital FM Radio Transmitter with...
"Do I even need to solder leads to all 8+7 (15)"
Build Your Own Digital FM Radio Transmitter with...
"Hi - I bought an FM transmitter from SparkFun (product URL at bottom). In fact, I bought ~8 of"
S-Video to RCA Cable...
"correction (test it): White (blue wire) is L audio, Red is R audio. image for"
Continuity Tester Differentiates...
"One more change I did, I replaced the green led with a 3v"
Continuity Tester Differentiates...
"Tried a 3.7v small lipo and still works. This is perfect for checking pcb"
electroschematics group on facebook
...
  Search 4 million + Products
Browse Products