3:50 Electronics: Surface mount transformerless 230v to 3.3v on a small board (4 Solutions!!) Roel Van de Paar
1:41 How can software give an accurate estimation of remaining usage time for a worn battery? Roel Van de Paar
3:24 Electronics: When is a non-polarized electrolytic capacitor inappropriate? (3 Solutions!!) Roel Van de Paar
2:23 Electronics: Any examples of an SPI based protocol with a checksum? (2 Solutions!!) Roel Van de Paar
2:08 Electronics: Why does the MCP4241 digital rheostat still work after Vdd is disconnected? Roel Van de Paar
2:51 Electronics: How can I program an Atmega32u4 over USB with this schematic? (2 Solutions!!) Roel Van de Paar
1:55 Strong H fields: electronic items susceptible to thier damaging effects and how to shield them Roel Van de Paar
2:01 Electronics: Trasferring Arduino chip from prototype platform to a PCB (Serial Communication) Roel Van de Paar
2:08 Electronics: How can I integrate microphone and speaker into my microcontroller project? Roel Van de Paar
2:28 Electronics: Can this circuit validate AT89Cx051 micro if best valued components are used? Roel Van de Paar
3:37 Electronics: ICs ("chips") are typically packaged in what material? (3 Solutions!!) Roel Van de Paar
3:36 Electronics: Can I wake ESP8266 with photoresistor like in this schematic? (4 Solutions!!) Roel Van de Paar
2:12 Electronics: Which household electronics contain or used to contain photo multiplier tubes? Roel Van de Paar
2:12 DIY 75ohm to 50ohm impedance matching circuit to work at UHF frequencies around 470MHz to 600Mhz Roel Van de Paar
1:40 How can I make a PoE circuit that is compatible with 24V passive PoE and 802.3at active PoE? Roel Van de Paar
4:52 Electronics: Identifying Source of Periodic Artifact at Op-Amp Output (4 Solutions!!) Roel Van de Paar
1:54 Reasoning Behind Placement of Various Components in Radio Receiver Circuit (2 Solutions!!) Roel Van de Paar
2:41 Electronics: Can 2N2222A transistor be used to replace a MJ2955 transistor? (3 Solutions!!) Roel Van de Paar
2:49 Electronics: Operational amplifier output is asymmetrically clipped (2 Solutions!!) Roel Van de Paar
1:59 Electronics: Stop EAGLE from wanting to connect all thermal pads together (2 Solutions!!) Roel Van de Paar
2:19 How is the ability of a single charger to charge a range of types of mobile phones achieved? Roel Van de Paar
1:41 Electronics: Is it possible to mod a class 2 bluetooth device to work as a class 1 device? Roel Van de Paar
2:12 Electronics: auto shift on keypad press in lcd using fujitsu F2MC-16LX MB90385 Series Roel Van de Paar
1:25 Electronics: How do I determine the current load at which my buck regulator will operate in DCM? Roel Van de Paar
