Paraset Power Supply

One of my ham radio buddies calls this the paraset mini cooper. Power supply for mk vii this forum is all about building and using world war ii spy radio equipment in particular the whaddon mk vii paraset. The power supply is very compact in a great box.

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The Paraset Spy Radio With A Regenerative Receiver Covered 3 0 Mhz 7 6m Mhz In One Band The Output Power Was Approximately 4 5 Watts

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I decided to use 12v to my paraset.

Paraset power supply.

These can be scaled up or down if your b is significantly different. The voltage parameters measured on the receiver section are shown below. The output is smoothed by a pair of filter capacitors and a filter choke. The transmitter has the paraset style parallel series tuned tank circuit and seems to load well even with a random length wire antenna.

The arrows show in which direction the anker swings. A 5y3 gt or a pair of 1n1007 silicon diodes if desired is used as the full wave rectifier. It s not easy to find vibrators today. This power supply is also used with other projects as a utility power supplly.

This one was very noisy so i opened it. It is built on a small bread pan i use these to sort small. A test with a 15w 230v lamp. The b power supply uses the standard full wave center tapped configuration.

Consisting of transformer rectifier tube 6x5gt and a capacitor. The homebrew power supply built for the project was only able to provide 295 volts which is a little less than desirable but enough to provide a solid 5 watts of qrp output from the 6v6 power oscillator. With new rubberbands it s fit for fight. This is the power supply i use with the paraset replica.

For other radios separate forums can be set up ask the quartermaster. A series dropping resistor drops the output of the supply to 250v. The rubber bands who kept the chassie in the holder had vanished. The power supply is also tested september 15 1953 the power supply is very simple.

The power supply delivers 6 vac and 350vdc. It has 2 of the 12ba6 tubes for the regen radio and 2 of 12aq5 s for the little cw transmitter.