On Wed, 29 Aug 2001 09:34:03 +0100, you wrote: >Hi > >Does anyone know of a circuit to generate 35 to 40 Volt output? > >The Voltages available to power the circuit are: > >3.3V, or 5V, or 10V, or 20V > >Thanks How much current do you need ?=20 If low (a mA or two), a charge-pump based on a 4049 hex inverter (2 gates for the oscillator, and two pairs of parallelled gates as drivers) ruuning from the 10V supply will be the cheapest option.=20 -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu