Hello.

If I was to buy a new CS 2 /60215 which transformer does it need. I am useing the 60061 for the 60213.

Charles.

Not exactly true. A step down switch mode regulator like these ones simply means that you're realizing a voltage step down by "chopping" the input on/off rapidly. By then sufficiently filtering this output, you then get an approximation of the average voltage of the chopped up input (i.e. voltage in * duty cycle %).

They have feedback networks to ensure that the output is constantly tracking a reference and adjust the duty cycle to compensate for things like varying input voltages. But if this feedback control is poorly designed (i.e. simply can't track error quick enough), there's no guarantee they behave any better.

The real big plus is cost, size and weight.

Hi Charles

Just a little info from me :

I use a Marklin CS2 60215 with a 60101 Watt Transformer to power the H0-Layout i have.

All cables going to the tracks as been changed from Cable 0,25mm thickness to 0,75 mm thickness on my 40 m2 Layout
and i have been driving my trains now for the last 8 months without any kind of problems regarding to the CS2 or tracks.

With the CS2 (60215) you will also be able to use your 6061 transformer (60 Watt) to.

Hello Charles, Hello Forum friends
I am also using a 60101 with my CS2 (60214 with galavanic separation) since almost a year and its working very well, full 5A, no side effects caused by 5A on my HO layout thanks to my 2,5mm² feeder line and thanks to a very intelligent overcurrent sensing in the CS2. No damage to any device, decoder, wheel, relay contact, etc.
Previously, I was using a transformer and the voltage fluctuations were noticeable but not anymore with the switching power supplies (voltage is regulated as on the ESU's CS2 equivalent) .
The advantage is also to do without any booster in most cases.
I tried in the past CS1 with a transformer, CS1 with a PC power supply, CS2 with a transformer, a 60061 and now a 60101.
Clearly there is a HUGE difference between a transformer and a switching power supply (those I tested have a regulated voltage output: 19 V)
Cheers
Jean

Transformer has AC power while rectifiers has DC.
AC power has waveform while DC has directform.
AC power has sometimes power detonation which makes CS2 or MS2 disturbs.
With an rectifier DC you have directform power to CS2 and MS2 which makes safer contact.

Electroplating(galvanization) is generally used to protect against corrosion.

An interesting little side note.


Steve Jobs

Chapter 6

“Next came the power supply. Digital geeks like Wozniak paid little attention to something so analog and mundane, but Jobs decided it was a key component. In particular he wanted—as he would his entire career—to provide power in a way that avoided the need for a fan. Fans inside computers were not Zen-like; they distracted. He dropped by Atari to consult with Alcorn, who knew old-fashioned electrical engineering. “Al turned me on to this brilliant guy named Rod Holt, who was a chain-smoking Marxist who had been through many marriages and was an expert on everything,” Jobs recalled. Like Manock and others meeting Jobs for the first time, Holt took a look at him and was skeptical. “I’m expensive,” Holt said. Jobs sensed he was worth it and said that cost was no problem. “He just conned me into working,” said Holt, who ended up joining Apple full-time. 

Instead of a conventional linear power supply, Holt built one like those used in oscilloscopes. It switched the power on and off not sixty times per second, but thousands of times; this allowed it to store the power for far less time, and thus throw off less heat. “That switching power supply was as revolutionary as the Apple II logic board was,” Jobs later said. “Rod doesn’t get a lot of credit for this in the history books, but he should. Every computer now uses switching power supplies, and they all rip off Rod’s design.” For all of Wozniak’s brilliance, this was not something he could have done. “I only knew vaguely what a switching power supply was,” Woz admitted.”

Excerpt From: Walter, Isaacson. “Steve Jobs.” Simon & Schuster