60-mA current-source feeds telecomm lines – 12/18/97 EDN-Design Ideas An isolated 60-mA current source provides 120V of compliance for use in telecommunication interfaces (Figure 1). Constant-current line feed provides dc power for downstream circuitry independent of line length and provides inherent short-circuit protection. The key to isolated…. [Design Idea by Kurk Mathews, Linear Technology Corp, Milpitas, CA]
60V 3A Step-Down DC/DC Converter has Low Dropout & 100µA Quiescent Current – DN352 Design Notes (Linear Technology)….[App Note]
60V Step-Down DC/DC Converter has Only 100µA Quiescent Current – DN1007) Design Notes (Linear Technology)
Battery Charger Circuit – The circuit can be used to charge 12V lead acid batteries.
3.3V / 5V Regulated Power Supply Circuit – This circuit can be used to power your digital breadboard circuits.
+9 Volt*and* 9 Volt from One Battery! – MAX1044 is a charge pump converter it uses a capacitor as a “bucket” to pump charge from one place to anor. It can be used to generate negative voltage easily.
±12V supply accepts 9 to 30V inputs – 12/04/97 EDN-Design Ideas….For applications that require symmetric supply voltages from a wide input range, the switch-mode supply in Figure 1 delivers more than 3.6W at 12V and operates from inputs of 9 to 30V. Over this input range, efficiency.… [Design Idea by Ron Young, Maxim Integrated Products, Sunnyvale, CA]
+5V Power Supply Circuit – This circuit is a small +5V power supply, which is useful when experimenting with digital electronics. Small inexpensive wall….[Tomi Engdahl’s design]
+30V Power Supply with +5V – I made power supply which makes about +30V with +5V power supply. Direct current is changed into alternating current by oscillator which used Schmitt trigger inverter which has hysteresis….[Designed by Seiichi Inoue]
‘Always on’ for PCs – Many enthusiasts will be using their PCs as data loggers, controllers or as web servers. In these cases it is important that….must register on this site…. [Published in Elecktor July/August 2010]
+/-5V Power Supply Operation with TC7106A/7107A TC7106A/7107A – Microchip Application Note Published 12-Nov-02….[App Note]
.4 watt 100% Radio Shack DC-DC Converter – This DC-DC converter (“inverter”) needs nothing but unmodified Radio Shack parts. You don’t need to build or wind any coils or transformers…….
0.2V Supply Voltage Nanopower Inverter Circuit – Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc….[App Note]
0.2V Supply Voltage Nanopower Two-Inputs NOR & NAND gates – Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc….[App Note]