Charles Amann |
Useful document for later reference

Salvatore Salanitro |

Peter Greifenberg |

Terrance Banach |
Great review course, good comprehensive quiz.

James Potts |

Philip Smith |
Very helpful and informative.

Ronald Jones |
the principles are good and well explained. However, there are some typographical errors in some of the calculation examples. For example on page 101 it states the total load current is 300 mA when it is 450mA. The bleeder calculation uses the correct value 45 mA. WEBMASTER NOTE: Thanks for your comments. We have referred this question to the author for review and possible correction.

Larry Ware |

Timothy Johnson |
Very efficient and easy to use. Printout of certificate is timely, instead of waiting on mail.

James Hattingh |

Michael McHarg |

Michael Strahan |
Good Refresher course for DC Circuits

Robert Wilks |
Recommend it to engineers needing PDH to renew a PE license

Frederick Uptagrafft |
Very well pleased. The material is presented very well.

Michael Burk |

Homer Goff, Jr. |
The material was well prepared.

David Jr. Patton |
satisfactory

Ji Tao Chen |
Great!

Thomas Brown |
I like it. I have been using it for several years.

Fred Hampton |
Material was well presented and easy to follow along. Great for anyone needing PDHs.

Thomas Lamontagne |
Good thorough course.

Harry Fosteris |
I have no problem withe this course but the software controlling the flow
of the questions needs improvement!

Leopold Field |
very good

Gary Klein |

Kevin Pohlman |

Steven Dittman |
good