Aim tti single 0 250v 0 0 375a single power supply aim tti plh250 p the aim tti plh250 retains the ultra compact format high power density and smart analog controls of the pl series but offers voltages up to 250v to cover applications beyond the capabilities of standard bench psus and into areas such as magnetics p p as technology has changed many products have moved from analog controls to digital ones although digital controls suit many instruments they do not necessa