Abstract : A transistorized dc-to-dc converter has been designed using a camic transformer. This converter is particularly adaptable to equipment used in measuring magnetic fields. The ceramic transformer provides further advantages of reduced size and complexity over flyback type pulse and resonant rf transformers, which require the use of many turns of well insulated wire. A prototype model, built to convert 28 v dc to 2200 v dc at 20 microamperes, operates satisfactorily from -35 degrees centigrade to 75 degrees centigrade and shows no substantial change in output after continuous operation for 3600 hr. Included is a procedure for the design of a transverse transformer showing the voltage amplification to be a function of piezoelectric coefficients and transformer geometry.