CL-50 PEH circuit, 3.3V DC output

The CL-50 is a PEH circuit for harvesting energy from a broad range of piezo energy harvester. The CL-50 has a stabilized 3.3V DC output and is especially designed to work with MFC P2 type generators. The CL-50 also works with other PEHs. It has a high voltage input range of up to 90V AC  and a maximum output current of 40mA.

EH300, EH301 EH circuit

The EH300/EH301 Series EH Modules from Advanced Linear Devices can accept energy from many types of electrical energy sources and store this energy to power conventional 3.3V and 5.0V electrical circuits. EH300/EH301 Series Modules are completely selfpowered and always in the active mode. They can function with instantaneous input voltages ranging from 0.0V to +/-500V AC or DC, and input currents from 200nA to 400mA.