ELTIM audio BV

Linear Voltage regulator modules

VR-modules,        Linear, symmetrical voltage regulator modules




Based on a pair of zenerdiodes and transistors


based on a pair of CRD's, zenerdiodes and transistors
Due to the Current Regulating Diodes the input voltage can vary in a wide range.


Based on  SMD LM317/337 linear regulating IC's.  
±0,5A output current max.
Their dynamic behaviour is far better than the 78xx/79xx series.

We implemented all parts as shown on the LM317/337 datasheets.
With 20 turn trimmers you can finetune the output voltages.

Everybody else states that LM317/337 can handle/regulate 37V tops.
Wrong! Due the "floating" (not connected to ground) characteristics
of LM317/337, you can even regulate high (tube) voltages.
Only thing to remember is that
the difference in voltage is < 37V, see datasheets.




Based on  TO220 LM317/337 linear regulating IC's, mounted on some heatsinks.  Due to this, ±1,5A output current max.
These function far better than the 78xx/79xx series show!

We implemented all parts as shown on the LM317/337 datasheets!
With 20 turn trimmers you can finetune the output voltages.

Due the "floating" characteristics of LM317/337,
you can even regulate high voltages.
Only thing to remember is that the difference in voltage is < 37V.



VR-modules,        Linear, single voltage regulator modules

 

Based on  SMD LM317/337 linear regulating IC's.
0,5A output current max.

The dynamic behaviour is far better than the 78xx/79xx series show!
Since these are used about everywhere, even in expensive equipment you can exchange them, resulting in better sound.
The modules are slightly larger than the TO220 versions of 78xx//79xx. The 3-leg pinning is identical as 78xx/79xx.
Due the "floating" characteristics of LM317/337,
you can even regulate high voltages. Only thing to remember
is that the difference in voltage is < 37V.