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Mainpage > Articles > MYRRA > Power supplies

Transformer classic or an electronic one?

If we´re deciding whether to use a classic transformer or better a modern electronic switch-mode power supply (SMPS), it´s good to realize pros and cons of both technologies.

Switch mode power supplies Myrra series 47000 already found their stable place on the market and they gradually replace classic transformers. Why is it so?

Switch-mode power supplies definitely win in a perhaps the most important requirement of these days - in efficiency (in a whole load range) and in a low no-load consumption (Standby). Similarly also many other factors say in favor of switch-mode power supplies, for example power/ weight ratio, size, simple elimination of a high inrush current, silent operation, minimum stray magnetic field, ...

From these reasons for the majority of applications it´s better and often even cheaper to use an “electronic replacement” of transformer - for example modules series Myrra 47xxx or AC/DC modules Traco Power for higher power ratings.

Maybe it´s worth to question, whether there´s still any reason to use a classic transformer in usual applications with power demands say 1-1000W? Surely yes, for example in application very sensitive to HF radiation (HF receivers, pre-amplifiers,…) but also in applications with a demand for the highest reliability for decades. Transformer is a component which almost doesn´t age and if properly sealed in a resin, then it´s lifetime is extremely long. As a transformer doesn´t contain any semiconductors, capacitors etc, it´s also very resistant to various spikes, overvoltages and noise in a power line...

Power supplies of 47000 series have a very low no-load power consumption - only 200 mW, resp. 300 mW at unregulated types. With the 4000VAC isolation (input/output), they´re ready for a class II – reinforced isolation. With a built-in protection against shortcut and over-temperature, they´re ready for usage in a virtually any device with power demands up to approx. 5-5,4W.

Detailed information will provide you the Myrra 47000 datasheet and the article Save energy and production costs with Myrra 47000 switch-mode power supplies.

In case of interest, please contact us at info@soselectronic.com.

Gain the AC/DC module Myrra for free!
On this place there was a sontest with a contest question:
What´s the input voltage range of Myrra 47000 series?


These participants were drawn by lots:
Černý Igor [CZ]
Vrabel Lubo [SK]
Berecz Péter [HU]
Bunzel Wolfgang [DE]
Litwinowicz Bogusław [PL]

Congratulations to winners. We´ll inform them by e-mail.

Date of publishing 2014-05-21
When you issue article on your website, please give its source: http://www.soselectronic.com/?str=1533
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On-line information from SOS electronic
Updated 2016-05-28 04:30:29
PictureType
Description
Order number, Kind of Product
Manufacturer (Brand)In stock
*External stock
(Pending)
Price excl.VAT
Currency: 
47114

47114

AC/DC Power Supply for PCB 2,4W 12V/0,2A
Order number: 128755, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
66 pcs
-
(-)
6.0500 EUR
5+/4.9000 EUR
25+/4.3200 EUR
47121

47121

AC/DC Power Supply for PCB 2,5W 3,3V/0,75A
Order number: 101290, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
340 pcs
-
(-)
5.5800 EUR
5+/4.5200 EUR
25+/3.9800 EUR
100+/3.6400 EUR
250+/3.4300 EUR
47122

47122

AC/DC Power Supply for PCB 2,75W 5V/0,55A
Order number: 101291, S, RoHS
More info: 47122.pdf
PCB Mount AC/DC Converters
MYRRA
910 pcs
-
(2016-W26 700 pcs)
(2016-W23 300 pcs)
5.2400 EUR
5+/4.2400 EUR
25+/3.7400 EUR
100+/3.4200 EUR
250+/3.2200 EUR
47123

47123

AC/DC Power Supply for PCB 2,5W 9V/0,27A
Order number: 101292, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
41 pcs
-
(-)
5.3100 EUR
5+/4.3000 EUR
25+/3.7900 EUR
47124

47124

AC/DC Power Supply for PCB 2,5W 12V/0,21A
Order number: 101293, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
360 pcs
-
(-)
5.3000 EUR
5+/4.2900 EUR
25+/3.7900 EUR
100+/3.4600 EUR
250+/3.2600 EUR
47125

47125

AC/DC Power Supply for PCB 2,5W 15V/0,17A
Order number: 101294, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
0 pcs
-
(2016-W23 25 pcs)
6.0200 EUR
47126

47126

AC/DC Power Supply for PCB 2,5W 24V/0,11A
Order number: 101295, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
240 pcs
-
(-)
5.9900 EUR
5+/4.8500 EUR
25+/4.2800 EUR
100+/3.9100 EUR
47132

47132

AC/DC Power Supply for PCB 2,5W 5V/0,5A
Order number: 128759, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
170 pcs
-
(-)
5.5400 EUR
5+/4.4800 EUR
25+/3.9600 EUR
100+/3.6100 EUR
47133

47133

AC/DC Power Supply for PCB 3,2W 9V/0,36A
Order number: 114286, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
410 pcs
-
(-)
4.9500 EUR
5+/4.0000 EUR
25+/3.5300 EUR
100+/3.2300 EUR
250+/3.0400 EUR
47134

47134

AC/DC Power Supply for PCB 3,2W 12V/0,27A
Order number: 126357, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
8 pcs
-
(-)
5.3900 EUR
5+/4.3700 EUR
47135

47135

AC/DC Power Supply for PCB 3,2W 18V/0,18A
Order number: 128760, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
25 pcs
-
(-)
5.6700 EUR
5+/4.5900 EUR
25+/4.0500 EUR
47136

47136

AC/DC Power Supply for PCB 3,2W 24V/0,13A
Order number: 128761, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
80 pcs
-
(-)
5.7500 EUR
5+/4.6500 EUR
25+/4.1000 EUR
47151

47151

AC/DC Power Supply for PCB 4,2W 3,3V/1,35A
Order number: 101296, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
170 pcs
-
(-)
5.9100 EUR
5+/4.7800 EUR
25+/4.2200 EUR
100+/3.8500 EUR
47152

47152

AC/DC Power Supply for PCB 4,5W 5V/0,9A
Order number: 101297, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
650 pcs
-
(-)
5.2100 EUR
5+/4.2200 EUR
25+/3.7200 EUR
100+/3.4000 EUR
250+/3.2000 EUR
47153

47153

AC/DC Power Supply for PCB 5W 9V/0,55A
Order number: 101298, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
940 pcs
-
(-)
5.1300 EUR
5+/4.1500 EUR
25+/3.6600 EUR
100+/3.3400 EUR
250+/3.1500 EUR
47154

47154

AC/DC Power Supply for PCB 5W 12V/0,42A
Order number: 101299, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
0 pcs
-
(2016-W29 700 pcs)
(2016-W26 1000 pcs)
5.1700 EUR
5+/4.1900 EUR
25+/3.6900 EUR
100+/3.3700 EUR
47155

47155

AC/DC Power Supply for PCB 5W 15V/0,32A
Order number: 101300, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
900 pcs
-
(2016-W23 800 pcs)
(2016-W32 200 pcs)
5.1700 EUR
5+/4.1900 EUR
25+/3.6900 EUR
100+/3.3700 EUR
250+/3.1800 EUR
47156

47156

AC/DC Power Supply for PCB 5W 24V/0,22A
Order number: 101301, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
310 pcs
-
(2016-W26 700 pcs)
5.3100 EUR
5+/4.3000 EUR
25+/3.8000 EUR
100+/3.4700 EUR
250+/3.2600 EUR
47162

47162

AC/DC Power Supply for PCB 4,5W 5V/0,9A
Order number: 128762, S, RoHS
More info: Myrra_47162.pdf
PCB Mount AC/DC Converters
MYRRA
66 pcs
-
(-)
5.6600 EUR
5+/4.5800 EUR
25+/4.0400 EUR
47163

47163

AC/DC Power Supply for PCB 5W 9V/0,55A
Order number: 128763, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
640 pcs
-
(-)
5.4400 EUR
5+/4.4000 EUR
25+/3.8900 EUR
100+/3.5500 EUR
250+/3.3400 EUR
47164

47164

AC/DC Power Supply for PCB 5W 12V/0,42A
Order number: 109921, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
740 pcs
-
(-)
5.0400 EUR
5+/4.0800 EUR
25+/3.6000 EUR
100+/3.2900 EUR
250+/3.1000 EUR
47165

47165

AC/DC Power Supply for PCB 5W 18V/0,28A
Order number: 115658, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
0 pcs
-
(-)
6.0200 EUR
47166

47166

AC/DC Power Supply for PCB 5W 24V/0,21A
Order number: 109922, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
69 pcs
-
(-)
6.1400 EUR
5+/4.9700 EUR
25+/4.3800 EUR
47243

47243

AC/DC Power Supply for PCB 4W 10,5V/0,38A 7V/0,1A
Order number: 128765, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
100 pcs
-
(-)
6.4300 EUR
5+/5.2000 EUR
25+/4.5900 EUR
100+/4.1900 EUR
47245

47245

AC/DC Power Supply for PCB 4W 12V/0,13A 5,5V/0,3A
Order number: 128767, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
69 pcs
-
(-)
6.4300 EUR
5+/5.2000 EUR
25+/4.5900 EUR
47246

47246

AC/DC Power Supply for PCB 4W 5V/0,4A 12V/0,17A
Order number: 101302, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
710 pcs
-
(-)
7.0400 EUR
5+/5.7000 EUR
25+/5.0300 EUR
100+/4.5900 EUR
250+/4.3200 EUR
47247

47247

AC/DC Power Supply for PCB 4W ±15V/0,13A
Order number: 103094, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
100 pcs
-
(-)
6.3900 EUR
5+/5.1700 EUR
25+/4.5600 EUR
100+/4.1700 EUR
47252

47252

AC/DC Power Supply for PCB 3,5W 5V/0,6A 5V/0,6A
Order number: 103895, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
1000 pcs
-
(-)
5.3400 EUR
5+/4.3200 EUR
25+/3.8100 EUR
100+/3.4800 EUR
250+/3.2800 EUR
47254

47254

AC/DC Power Supply for PCB 5W 12V/0,165A 12V/0,165A
Order number: 103185, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
400 pcs
-
(-)
6.1600 EUR
5+/4.9900 EUR
25+/4.4000 EUR
100+/4.0200 EUR
250+/3.7800 EUR
47255

47255

AC/DC Power Supply for PCB 5W 2x15V/0,17A
Order number: 121875, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
130 pcs
-
(-)
5.8500 EUR
5+/4.7400 EUR
25+/4.1800 EUR
100+/3.8200 EUR
47257

47257

AC/DC Power Supply for PCB 4W 5V/0,4A 12V/0,17A
Order number: 103306, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
420 pcs
-
(-)
5.9600 EUR
5+/4.8200 EUR
25+/4.2600 EUR
100+/3.8900 EUR
250+/3.6600 EUR
47258

47258

AC/DC Power Supply for PCB 5W 18V/0,15A 8V/0,15A
Order number: 128764, S, RoHS
More info: myrra47000.pdf
PCB Mount AC/DC Converters
MYRRA
160 pcs
-
(-)
6.3300 EUR
5+/5.1200 EUR
25+/4.5200 EUR
100+/4.1300 EUR
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