This power source was found in a 1969’ Electronics World. The version is too sophisticated by the current it supplies and can be implemented with modern transistors.
We found this circuit in an 80's Radio Electronics. It can still be easily assembled as the used...
April 2017 - Texas Instruments' new high-precision TMP468 sensor can now be obtained from Mouser...
In fact, the maximum output current of this source depends on the transformer which can be 6, 7.5, 9...