At the present prices of the batteries Electromechanical clock type "Glory" it is most advantageous to feed from the network. Especially if they are built-in furniture, for example, the kitchen.
Previously published schemes of such food are transformerless, such power scheme is dangerous as the clock mechanism is energized the network, therefore it is better to do the power transformer (see figure).
The scheme is not original. It includes parametric the current stabilizer C1, R1, I, winding T1 and a voltage regulator 1.5 V VD5, VD6. The author of the PSU works in tandem with the little finger the battery in the kitchen for over 10 years. She needed to be safe clock when the power outage.
The entire power supply unit fits into a compartment for the battery hours together with the "Tom thumb". The transformer T1 - transition from radio "Spidola" (VEF).
Author: O. G. Rashitov, Kiev