I made the power supply which makes about +30V with +5V power supply.
The direct current is changed into the alternating current by the oscillator which used the schmitt trigger inverter which has the hysteresis characteristic and the resonance circuit. The high DC voltage (+50V) is made with the alternating voltage using the voltage amplification rectification [...]

This circuit is for a 1.5 Volt power supply using the LM317T Adjustable Voltage Regulator.
Top power supply Circuit by IC LM317 Voltage regulator
Source : http://home.cogeco.ca/~rpaisley4/PSupply.html